...because we can't all be on the bleeding edge...





ELITE 2864L

ZYXEL COMMUNICATIONS CORPORATION

ELITE 2864L

Card Type

Modem (synchronous/asynchronous)

Chipset

Siemens-Nixdorf

Maximum Modem Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

Serial/Parallel

Fax Class

Class I & II

Modem Modulation Protocol

Bell 103A/212A

ITU-T V.21, V.22, V.22bis, V.23, V.26bis, V.27bis, V.29, V.32, V.32bis, V.33, V.34

ZyXEL ZyX19200, ZyX16800, ZyCELL cellular

Fax Modulation Protocol

ITU-T V.17, V.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

RS-232/422 port

CN1

Parallel port

CN5

Switched line out

CN2

Data/voice switch

BT1

Leased line out

CN3

Originate/answer switch

BT2

DC power

CN4

   

DRAM

Size

Bank 0

Bank 1

4MB

(2) 4M x 4

None

8MB

(2) 4M x 4

(2) 4M x 4

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

PWR

Red

On

Power is on

PWR

Red

Off

Power is off

TST

Red

On

Modem is in test mode

TST

Red

Off

Modem is not in test mode

FAX

Red

On

Modem is connected in fax mode

FAX

Red

Off

Modem is not connected in fax mode

LL

Red

On

Modem is connected on leased line

LL

Red

Off

Modem is not connected on leased line

SP

Red

On

Modem is communicating over serial port

SP

Red

Off

Modem is not communicating over serial port

PRP

Red

On

Modem is printing over parallel port

PRP

Red

Off

Modem is not printing over parallel port

PCP

Red

On

Modem is communicating over parallel port

PCP

Red

Off

Modem is not communicating over parallel port

V34 Status

V32b Status

Condition

Off

Off

Modem is operating with a modulation earlier than V.32

Off

On

Modem is operating with V.32bis or V.32 modulation

On

Off

Modem is operating with V.34 modulation

On

On

Modem is operating with ZyXEL proprietary modulation

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

AA

Red

Blinking

Phone is ringing

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

LED

Color

Status

Terminal Mode

Printer Mode

DTR/POL

Red

On

DTR signal is high

Printer is on-line

DTR/POL

Red

Off

DTR signal is low

Printer is off-line

DSR/PSL

Red

On

DSR signal is high

Printer is ready for input

DSR/PSL

Red

Off

DSR signal is low

Printer is not ready for input

RTS/PPE

Red

On

RTS signal is high

Printer is out of paper

RTS/PPE

Red

Off

RTS signal is low

Printer is not out of paper

CTS/PER

Red

On

CTS signal is high

Printer has encountered an error

CTS/PER

Red

Off

CTS signal is low

Printer has not encountered an error

TXD

Red

On

Modem is transmitting data

TXD

Red

Off

Modem is not transmitting data

RXD

Red

On

Modem is receiving data

RXD

Red

Off

Modem is not receiving data

EC

Red

On

Error correction enabled

EC

Red

Off

Error correction disabled

EC

Red

Blinking

Modem is retransmitting data

DIAGNOSTIC LED(S) (CONíT)

LED

Color

Status

Condition

SQ

Red

On

Signal quality is good

SQ

Red

Blinking

Signal quality is poor

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

ORG

Red

On

Modem is in originate mode

ORG

Red

Off

Modem is in answer mode

Proprietary AT Command Set

BIT-MAPPED REGISTER S14

Format:

AT [cmds] S14=n [cmds]

Default:

2

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls sync/async, clock source, line type, loopback test request, and leased line mode.

Bit

Value

Function

0

í 0

1

Originate mode in leased line operation.

Answer mode in leased line operation.

1

0

í 1

Grant request for remote digital loopback test.

Deny request for remote digital loopback test.

3, 2

í 00

01

10

Switched line type.

Two-wire leased line type.

Four-wire leased line type.

5, 4

í 00

01

10

Clock signal local internal.

Clock signal local external.

Clock signal remote.

7, 6

í 00

01

10

11

Buffered asynchronous mode.

Asynchronous while in command mode, switch to synchronous while in data mode.

Unbuffered asynchronous mode.

Synchronous mode.

BIT-MAPPED REGISTER S15

Format:

AT [cmds] S15=n [cmds]

Default:

130

Range:

0 - 158

Unit:

Bit-mapped

Description:

Controls active profile and data format.

Bit

Value

Function

1, 0

00

01

í 10

Use even parity.

Use odd parity.

Do not use parity.

2

í 0

1

Use 1 stop bit.

Use 2 stop bit.

4, 3

í 00

01

10

11

Use 10-bit characters.

Use 11-bit characters.

Use 9-bit characters.

Use 8-bit characters.

7, 6, 5

000

001

010

011

í 100

Profile 0 active at power-up.

Profile 1 active at power-up.

Profile 2 active at power-up.

Profile 3 active at power-up.

Factory defaults active at power-up.

BIT-MAPPED REGISTER S17

Format:

AT [cmds] S17=n [cmds]

Default:

18

Range:

0 - 191

Unit:

Bit-mapped

Description:

Controls command set type, dialing mode, leased line transmit attenuation, and secondary networking channel.

Bit

Value

Function

0

í 0

1

Secondary channel disabled.

Secondary channel enabled.

4 - 1

0000

...

í 1001

...

1111

Sets leased line transmit attenuation level to 0dBm.

...

Sets leased line transmit attenuation level to -9dBm.

...

Sets leased line transmit attenuation level to -15dBm.

5

í 0

1

Originate mode.

Answer mode.

7, 6

í 00

01

10

AT command set enabled.

V25bis command set enabled.

Command sets disabled.

BIT-MAPPED REGISTER S21

Format:

AT [cmds] S21=n [cmds]

Default:

178

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls DTR, CTS, CD, and DSR signals, speaker, and error correction.

Bit

Value

Function

0

í 0

1

Attempt an error-correcting connection. If that fails, attempt a normal connection.

Attempt an error-correcting connection. If that fails, hang up.

2, 1

00

í 01

10

11

Speaker disabled.

Speaker enabled until carrier signal detected

Speaker enabled.

Speaker enabled following dialing, then disabled after carrier signal detected.

3

í 0

1

DSR forced high.

DSR normal.

4

0

í 1

CD forced high.

CD normal.

5

0

í 1

CTS follows RTS when in synchronous mode.

CTS forced high when in synchronous mode.

7, 6

00

01

í 10

11

DTR is forced on.

Dial default number on high DTR; hang up on low DTR.

Low DTR hangs up and returns to command mode.

Low DTR hangs up and resets the modem to profile 0.

BIT-MAPPED REGISTER S23

Format:

AT [cmds] S23=n [cmds]

Default:

105

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls result codes, dialing, and echo.

Bit

Value

Function

0

0

í 1

Command echoing disabled.

Command echoing enabled.

1

0

Not used.

2

í 0

1

Select pulse dial make/break ratio of 39/61ms at 10pps (North America).

Select pulse dial make/break ratio of 33/67ms at 10pps (Europe).

5, 4, 3

000

001

010

011

100

í 101

110

111

Basic result codes only enabled.

Basic and connection speed result codes enabled.

Basic and connection speed result codes and dialtone detection enabled.

All result codes except dialtone detection enabled.

All result codes enabled.

All result codes plus DTE speed and error control level enabled.

All result codes plus ARQ enabled.

All result codes plus ARQ and error control level enabled.

6

0

í 1

Display result codes in numeric form.

Display result codes in long form.

7

í 0

1

Result codes enabled.

Result codes disabled.

BIT-MAPPED REGISTER S24

Format:

AT [cmds] S24=n [cmds]

Default:

138

Range:

0 - 238

Unit:

Bit-mapped

Description:

Controls speaker volume and ring volume.

Bit

Value

Function

0

0

Not used.

3, 2, 1

000

001

í 100

111

Ring volume off.

Ring volume low.

...

Ring volume medium.

...

Ring volume high.

4

0

Not used.

7, 6, 5

000

001

100

í 101

111

Speaker volume off.

Speaker volume low.

...

Speaker volume medium.

...

Speaker volume high.

BIT-MAPPED REGISTER S27

Format:

AT [cmds] S27=n [cmds]

Default:

156

Range:

0 - 228

Unit:

Bit-mapped

Description:

Controls reaction to poor signal quality, flow control, and error correction.

Bit

Value

Function

2, 1, 0

000

001

010

011

í 100

Error correction disabled for fax/modem.

MNP4 enabled for fax/modem.

MNP5 enabled for fax/modem.

V.42 and MNP4 enabled for fax/modem.

V.42bis and MNP5 enabled for fax/modem.

5, 4, 3

000

í 011

100

Flow control disabled.

Hardware flow control enabled.

Software flow control enabled.

7, 6

00

01

í 10

11

Modem does nothing during poor signal quality.

Modem retrains during poor signal quality.

Modem fall-back during poor signal quality, and fall-forward when signal improves.

Modem will disconnect during poor signal quality.

BIT-MAPPED REGISTER S28

Format:

AT [cmds] S28=n [cmds]

Default:

68

Range:

0 - 235

Unit:

Bit-mapped

Description:

Controls front panel lock, break type, guard tone, local serial port speed lock, and 1200bps protocol.

Bit

Value

Function

0

0

Not used.

1

í 0

1

Panel key unlocked.

Panel key locked.

3, 2

00

í 01

10

Destructive break sent ahead of data stream.

Non-destructive break sent ahead of data stream.

Non-destructive break sent at end of data stream.

5, 4

í 00

10

Guard tone disabled.

Guard tone enabled.

6

0

í 1

Local serial port speed follows connect speed.

Local serial port speed locked.

7

í 0

1

Sets V.22 as 1200bps protocol.

Sets Bell 212/A as 1200bps protocol.

BIT-MAPPED REGISTER S35

Format:

AT [cmds] S35=n [cmds]

Default:

32

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls 4800bps V.32, handshake interruption, V.26bis mode, leased line transmission attenuation, Selective Reject, password protection, and extended result codes.

Bit

Value

Function

0

í 0

1

4800bps V.32 normal.

Use ZyCELL 4800bps trellis coded instead of 4800bps V.32.

1

í 0

1

Handshake can be interrupted.

Handshake cannot be interrupted.

2

í 0

1

V.26bis normal.

V.26bis mode A.

3

í 0

1

Leased line transmission level normal.

Leased line transmission is attenuated by -12dBm.

4

í 0

1

Modem will not dial default number when Data/Voice button is pressed

Modem will dial default number when Data/Voice button is pressed

5

0

í 1

V.42 Selective Reject disabled.

V.42 Selective Reject enabled.

6

í 0

1

Profile password protection disabled.

Profile password protection enabled.

7

í 0

1

Connection speed result codes disabled on error correcting connection.

Connection speed result codes enabled on error correcting connection.

BIT-MAPPED REGISTER S36

Format:

AT [cmds] S36=n [cmds]

Default:

0

Range:

0 - 163

Unit:

Bit-mapped

Description:

Controls security and remote profiles.

Bit

Value

Function

0

í 0

1

Deny remote request for current configuration.

Grant remote request for current configuration.

1

í 0

1

Copies local profile to remote profile. Profiles set with S37.

Copies remote profile to local profile. Profiles set with S37.

4-2

000

Not used.

7, 6, 5

í 000

001

010

011

100

101

Security disabled.

Security type I and password check enabled.

Security type I, callback, and password check enabled.

Security type II and password check enabled.

Security type II, callback, and password check enabled.

Security type II, callback, and password check enabled. Callback number sent by remote.

BIT-MAPPED REGISTER S38

Format:

AT [cmds] S38=n [cmds]

Default:

0

Range:

0 - 57

Unit:

Bit-mapped

Description:

Controls auto-dial, CD signal, fax auto-answer, and MNP5.

Bit

Value

Function

0

í 0

1

Auto-dial of default number disabled.

Auto-dial of default number enabled.

2-1

00

Not used.

3

í 0

1

CD normal.

CD according to UNIX standard.

4

í 0

1

Fax auto-answer enabled.

Fax auto-answer disabled.

5

í 0

1

MNP5 enabled.

MNP5 disabled.

BIT-MAPPED REGISTER S39

Format:

AT [cmds] S39=n [cmds]

Default:

0

Range:

0 - 252

Unit:

Bit-mapped

Description:

Controls answer mode, Class 2 fax modes, V.26bis scrambler, DTMF detection, and resync info.

Bit

Value

Function

1-0

00

Not used.

2

í 0

1

Answer in answer mode.

Answer in originate mode.

3

í 0

1

Normal Class 2 fax.

Bitfax-compatible Class 2 fax.

4

í 0

1

Normal Class 2 fax.

Local serial port speed shift for Class 2 fax.

5

í 0

1

V.26bis scrambler enabled.

V.26bis scrambler disabled.

6

í 0

1

DTMF detection in voice mode only.

DTMF detection on AT+VLS=2 command.

7

í 0

1

Resync information not included in ADPCM voice file.

Resync information included in ADPCM voice file.

BIT-MAPPED REGISTER S40

Format:

AT [cmds] S40=n [cmds]

Default:

0

Range:

0 - 126

Unit:

Bit-mapped

Description:

Controls extended ring detection and result codes.

Bit

Value

Function

0

0

Not used.

1

í 0

1

Modem returns result codes.

Modem does not return result codes.

2

í 0

1

Caller ID disabled.

Caller ID enabled.

3

í 0

1

Ring type 1 detection disabled.

Ring type 1 detection enabled.

4

í 0

1

Ring type 2 detection disabled.

Ring type 2 detection enabled.

5

í 0

1

Ring type 3 detection disabled.

Ring type 3 detection enabled.

6

í 0

1

Ring type 4 detection disabled.

Ring type 4 detection enabled.

7

0

Not used.

BIT-MAPPED REGISTER S41

Format:

AT [cmds] S41=n [cmds]

Default:

0

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls MNP compatibility mode, V.25bis idle, retrain timeout, loopback tests, blind dial time, DSR signal, S0 register, and calling tone.

Bit

Value

Function

0

í 0

1

MNP compatibility mode disabled.

MNP compatibility mode enabled.

1

í 0

1

Use flag for V.25bis idle.

Use mark for V.25bis idle.

2

í 0

1

Retrain timeout normal.

Retrain timeout set to 5 minutes.

3

í 0

1

Loopback test signals disabled.

Loopback test signals enabled.

4

í 0

1

Modem waits for dial tone before dialing.

Modem waits for time set in S6 and then blind-dials.

5

í 0

1

DSR normal.

DSR follows CD and goes low for 1/2 second on loss of carrier.

6

í 0

1

Register S0 behaves normally.

Force S0 to be greater than 2.

7

í 0

1

Respond to calling tone.

Ignore calling tone.

BIT-MAPPED REGISTER S42

Format:

AT [cmds] S42=n [cmds]

Default:

0

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls secondary channel speed, throughput averaging, Caller ID display, escape sequence, V.17 mode, data/voice switch, and CD signal.

Bit

Value

Function

0

í 0

1

Secondary channel 2400/75bps.

Secondary channel 2400bps.

1

í 0

1

Throughput averaging disabled.

Throughput averaging enabled.

2

í 0

1

Caller ID information will be displayed even if ATQ2 is set.

Caller ID information will not be displayed if ATQ2 is set.

3

í 0

1

Escape sequence enabled in answer mode.

Escape sequence disabled in answer mode.

4

í 0

1

V.17 enabled.

Disable V.17 in originate mode.

5

í 0

1

Data/Voice switch enabled.

Data/Voice switch disabled.

6

í 0

1

Enable RING result.

Disable RING result.

7

í 0

1

CD forced high.

CD pulses off at carrier loss.

BIT-MAPPED REGISTER S44

Format:

AT [cmds] S44=n [cmds]

Default:

0

Range:

0 - 124

Unit:

Bit-mapped

Description:

 

Bit

Value

Function

1-0

00

Not used.

2

í 0

1

Dial backup executed automatically.

Dial backup waits for panel input.

3

í 0

1

Cyclic dial disabled.

Cyclic dial enabled.

4

í 0

1

DSR normal.

DSR follows DTR.

5

í 0

1

V.13 simulation disabled.

V.13 simulation enabled.

6

í 0

1

&B0

&B1

Local serial port speed determined normally.

Local serial port is locked at 19.2Kbps if link is 9600bps or faster, at 9600bps if link is 7200bps, and else at link speed.

Local serial port locked if ARQ link, and follows link speed otherwise.

BIT-MAPPED REGISTER S48

Format:

AT [cmds] S48=n [cmds]

Default:

0

Range:

0 - 61

Unit:

Bit-mapped

Description:

Controls caller ID format, call answering, calling tone, V.23 speed, DTR change action, and protocol negotiation.

Bit

Value

Function

0

í 0

1

Caller ID displayed normally.

Caller ID displayed as raw data.

1

í 0

1

Answer all incoming calls.

Answer data calls only.

2

í 0

1

Calling tone disabled.

Calling tone enabled.

3

í 0

1

V.23 speed set to 1200/75.

V.23 speed set to 75/1200.

4

í 0

1

Modem does nothing on DTR change.

Modem will dial default number on high DTR and disconnect and reset on low DTR.

5

í 0

1

Modem will negotiate all protocols.

Modem will not negotiate protocols faster than 9600bps.

BIT-MAPPED REGISTER S52

Format:

AT [cmds] S52=n [cmds]

Default:

0

Range:

0 - 144

Unit:

Bit-mapped

Description:

Controls received signal level and initial V.23 handshake signal.

Bit

Value

Function

2-0

000

Not used.

4, 3

í 00

01

10

Adjust received signal to -43dBm.

Adjust received signal to -33dBm.

Adjust received signal to -26dBm.

6-5

00

Not used.

7

í 0

1

First signal of V.23 handshake is Mark.

First signal of V.23 handshake is Space.

BIT-MAPPED REGISTER S57

Format:

AT [cmds] S57=n [cmds]

Default:

16

Range:

0 - 80

Unit:

Bit-mapped

Description:

Controls fax class 1 and busy detection during dialing.

Bit

Value

Function

3-0

0000

Not used.

4

0

í 1

Fax class 1 disabled.

Fax class 1 enabled.

5

0

Not used.

6

í 0

1

Busy detection disabled during dialing.

Busy detection enabled during dialing.

BIT-MAPPED REGISTER S84

Format:

AT [cmds] S84=n [cmds]

Default:

0

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls register value format, caller ID information reporting, and serial port mode.

Bit

Value

Function

2-0

000

Not used.

3

í 0

1

Display register values in decimal.

Display register values in hexadecimal.

4

í 0

1

Caller ID information display enabled.

Caller ID information display disabled.

6-5

00

Not used.

7

í 0

1

Serial port in single-stream mode.

Serial port in multistream mode.

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] &Yn [cmds]

Description:

Configures action of break signal.

Command

Function

&Y0

Break empties buffer and is sent immediately.

í &Y1

Break does not empty buffer and is sent immediately.

&Y2

Break does not empty buffer and is sent in data stream.

CALLBACK NUMBER DISPLAY

Type:

Immediate

Format:

AT [cmds] *VC [cmds]

Description:

Displays the table of callback numbers.

Note:

The supervisor password must be entered to execute this command.

CALLER ID INFORMATION

Type:

Immediate

Format:

AT [cmds] *T [cmds]

Description:

Displays the last caller ID information.

CALLER ID SILENCE DELAY

Type:

Register

Format:

AT [cmds] S45=n [cmds]

Default:

87

Range:

0-255

Unit:

20ms

Description:

Time period in which Caller ID silence detection is disabled.

CALLER ID SILENCE DETECTION

Type:

Register

Format:

AT [cmds] S46=n [cmds]

Default:

3

Range:

0-255

Unit:

20ms

Description:

Time period for which silence must be detected for Called ID information to be processed.

CELLULAR MODE

Format:

AT [cmds] S49=n [cmds]

Default:

9

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls cellular transmission attenuation and cellular function.

Bit

Value

Function

3 - 0

0000

...

í 1001

...

1111

Sets cellular transmit attenuation level to -9dBm.

...

Sets cellular transmit attenuation level to -18dBm.

...

Sets cellular transmit attenuation level to -24dBm.

6-4

000

Not used.

7

í 0

1

Cellular mode over phone lines.

Cellular mode through cellular phone.

CHARACTER LENGTH

Type:

Configuration

Format:

AT [cmds] *Cn [cmds]

Description:

Sets length of character.

Command

Function

í *C0

Set 10-bit character.

*C1

Set 11-bit character.

*C2

Set 9-bit character.

*C3

Set 8-bit character.

COMMAND MODE TYPE

Type:

Configuration

Format:

AT [cmds] *In [cmds]

Description:

Selects the command set the modem will use.

Command

Function

í *I0

AT command set enabled.

*I1

V.25bis command set enabled.

*I2

Dumb terminal mode, all command sets disabled.

Note: To leave dumb terminal mode, front panel menu must be used.

COMPRESSION AND ERROR CORRECTION MODE

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Selects the type of error correction and data compression used.

Command

Function

&K0

Error correction and compression disabled for switched-line calls.

&K1

MNP4 enabled for switched-line calls.

&K2

MNP5 enabled for switched-line calls.

&K3

V.42 and MNP4 enabled for switched-line calls.

í &K4

V.42bis and MNP5 enabled for switched-line calls.

CONFIGURATION PROFILES

Type:

Immediate

Format:

AT [cmds] &Vn [cmds]

Description:

Displays active and stored configuration profiles.

Command

Function

&V0

Displays current settings.

&V1

Displays profile 0.

&V2

Displays profile 1.

&V3

Displays profile 2.

&V4

Displays profile 3.

&V5

Displays factory defaults.

DEFAULT FALLBACK PHONE NUMBER

Type:

Register

Format:

AT [cmds] S30=n [cmds]

Default:

0

Range:

0-39

Unit:

N/A

Description:

Sets the default phone number the phone will dial when leased line goes down to memory location n. Setting S30 to 0 will disable this feature.

DEFAULT PHONE NUMBER

Type:

Configuration

Format:

AT [cmds] *Dn [cmds]

Default:

0

Range:

0-39

Unit:

N/A

Description:

Sets the default phone number to memory location n.

DEFAULT PHONE NUMBER

Type:

Register

Format:

AT [cmds] S29=n [cmds]

Default:

0

Range:

0-39

Unit:

N/A

Description:

Sets the default phone number to memory location n.

DES ENCRYPTION

Format:

AT [cmds] S89=n [cmds]

Default:

0

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls DES encryption settings.

Bit

Value

Function

0

í 0

1

DES encryption disabled.

DES encryption enabled.

1

í 0

1

Attempt single DES only.

Attempt triple DES.

2

í 0

1

Public key system enabled. Modem will generate key.

Public key system disabled. User must enter key.

3

í 0

1

Keep non-encrypted connection.

Disconnect from non-encrypted connection.

DES KEY SET

Type:

Configuration

Format:

AT [cmds] CKxxxx [cmds]

Description:

Sets the key to be used for DES encryption. The key must be between 15 and 65 characters.

DIAGNOSTICS

Type:

Immediate

Format:

AT [cmds] CGn [cmds]

Description:

Performs modem diagnostics.

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [; cmds]

Description:

Dials telephone number according to any modifiers included in the string.

Modifier

Function

DP

Dial in pulse mode.

DR

Dial in answer mode.

DS=n

Number in memory location n dialed.

DT

Dial in tone mode.

DW

Dialing resumed following dial tone detection.

D,

Dialing paused for amount of time specified in S8 register.

D!

Flash function initiated. Modem commanded to go on-hook for specified time.

D@

Modem waits for a ring-back signal followed by silence up to the time specified in S7 prior to executing the rest of the dial string.

D;

Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

DIAL BACKUP

Type:

Configuration

Format:

AT [cmds] *Bn [cmds]

Description:

Selects the memory location for the dial backup. *B or *B0 will disable dial backup.

DISPLAY STORED PHONE NUMBERS

Type:

Immediate

Format:

AT [cmds] &Z? [cmds]

Description:

Displays all stored phone numbers.

ERROR CONTROL FAILURE

Type:

Configuration

Format:

AT [cmds] *En [cmds]

Description:

Configures the modemís behavior if an error-connecting connection cannot be made.

Command

Function

í *E0

Modem will keep non-error-correcting connection.

*E1

Modem will disconnect non-error-correcting connection.

EXTENDED RING

Format:

AT [cmds] S51=n [cmds]

Default:

0

Range:

0 - 255

Unit:

Bit-mapped

Description:

Sets operation of modem when it detects extended rings and fax rings.

Bit

Value

Function

1, 0

00

01

10

11

Extended ring tone detection disabled.

Extended ring tone returns RING n twice.

Extended ring tone returns RING n four times.

Extended ring tone returns RING n six times.

3, 2

00

01

10

DTMF detection disabled.

DTMF tone returns RING n twice.

DTMF tone returns RING <digit>.

5, 4

00

01

10

11

Fax ring tone detection disabled.

Fax ring tone returns RING.

Fax ring tone returns RING 1.

Fax ring tone returns RING 2.

7, 6

00

01

10

11

Data ring tone detection disabled.

Data ring tone returns RING.

Data ring tone returns RING 1.

Data ring tone returns RING 3.

FAX CONNECT

Type:

Result code

Format:

CONNECT FAX/SnnnnVaTbRcLxCyP<#>

Example:

CONNECT FAX/S1440V1T1R0L1C0P(303) 555-1212

Description:

Returned by the modem when a successful fax connection has been made.

Response

Meaning

S2400

2400bps connection.

S4800

4800bps connection.

S7200

7200bps connection.

S9600

9600bps connection.

S1200

12Kbps connection.

S1440

14.4Kbps connection.

V0

Normal vertical resolution.

V1

High vertical resolution.

T0

One-dimensional coding scheme.

T1

Two-dimensional coding scheme.

R0

215mm wide (1728 pels).

R1

255mm wide (2048 pels).

R2

303mm wide (2432 pels).

FAX CONNECT (CONíT)

Response

Meaning

L0

A4 length (297mm).

L1

B4 length (364mm).

L2

Unlimited length.

C0

20ms minimum per line.

C1

5ms minimum per line.

C2

10ms minimum per line.

C3

20ms minimum per normal-resolution line, 10ms minimum per fine-resolution line.

C4

40ms minimum per line.

C5

40ms minimum per normal-resolution line, 20ms minimum per fine-resolution line.

C6

10ms minimum per normal-resolution line, 5ms minimum per fine-resolution line.

C7

No minimum time required.

P<#>

Remote fax station number.

FAX DISCONNECT

Type:

Result code

Format:

DISCONNECTn P<#>

Example:

DISCONNECT1P(303) 555-1212

Description:

Returned by the modem when the fax connection has been broken.

Response

Meaning

DISCONNECT0

Remote modem has confirmed disconnection.

DISCONNECT1

Remote modem has not confirmed disconnection.

P<#>

Remote fax station number.

FAX ENCODING

Type:

Configuration

Format:

AT [cmds] #Tn [cmds]

Description:

Sets the encoding scheme of transmitted faxes.

Command

Function

#T0

Sets one-dimensional encoding.

#T1

Sets two-dimensional encoding.

FAX LENGTH

Type:

Configuration

Format:

AT [cmds] #Ln [cmds]

Description:

Sets the length of transmitted faxes.

Command

Function

#L0

A4 length (297mm).

#L1

B4 length (364mm).

#L2

Unlimited length.

FAX MINIMUM SCAN LINE TRANSMISSION TIME

Type:

Configuration

Format:

AT [cmds] #Cn [cmds]

Description:

Sets the minimum time required for transmission of one scan line.

Command

Function

#C0

20ms minimum per line.

#C1

5ms minimum per line.

#C2

10ms minimum per line.

#C3

20ms minimum per normal-resolution line, 10ms minimum per fine-resolution line.

#C4

40ms minimum per line.

#C5

40ms minimum per normal-resolution line, 20ms minimum per fine-resolution line.

#C6

10ms minimum per normal-resolution line, 5ms minimum per fine-resolution line.

#C7

No minimum time required.

FAX MODE

Type:

Immediate

Format:

AT [cmds] #F [cmds]

Description:

Sets modem in fax mode.

FAX ORIGINATE/ANSWER MODE

Type:

Register

Format:

AT [cmds] S80=n [cmds]

Description:

Selects originate/answer for fax mode.

Command

Function

S80=0

Fax/modem operates in originate mode.

S80=1

Fax/modem operates in answer mode.

FAX RECEIVE DEVICE

Type:

Configuration

Format:

AT [cmds] +FZF=n [cmds]

Description:

Selects where the modem will store and send received fax and modem data.

Command

Function

+FZF=0

Send fax data to printer and hang up if modem data.

+FZF=1

Send fax data to printer and modem data to serial port.

+FZF=2

Send fax data to DRAM and printer, and hang up if modem data.

+FZF=3

Send fax data to DRAM and hang up if modem data.

+FZF=4

Send fax data to DRAM and printer, and hang up if modem data.

+FZF=5

Send fax data to DRAM and modem data to serial port.

FAX RECEIVE DEVICE

Type:

Register

Format:

AT [cmds] S71=n [cmds]

Description:

Selects where the modem will store and send received fax and modem data.

Command

Function

S71=0

Send fax data to printer and hang up if modem data.

S71=1

Send fax data to printer and modem data to serial port.

S71=2

Send fax data to DRAM and printer, and hang up if modem data.

S71=3

Send fax data to DRAM and hang up if modem data.

S71=4

Send fax data to DRAM and printer, and hang up if modem data.

S71=5

Send fax data to DRAM and modem data to serial port.

FAX RECEIVE MODE

Type:

Configuration

Format:

AT [cmds] #Bn [cmds]

Description:

Configures the operation of the modem when receiving faxes.

Command

Function

í #B0

Fax data follows immediately after connection parameters.

#B1

Fax data is separated from connection parameters by DC2 (ASCII 24) character.

#B2

Fax data is not transmitted until receiving modem requests it.

#B3

Displays the fax ring pattern

FAX RESOLUTION

Type:

Configuration

Format:

AT [cmds] #Vn [cmds]

Description:

Sets the vertical resolution of transmitted faxes.

Command

Function

#V0

Sets normal resolution.

#V1

Sets high resolution.

FAX STATION PHONE NUMBER

Type:

Configuration

Format:

AT [cmds] #P<#> [cmds]

Description:

Sets what the modem will report as its phone number to the remote fax machine.

FAX/VOICE FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] +FLO=n [cmds]

Description:

Selects the type of flow control to use for voice/fax modes.

Command

Function

+FLO=0

Flow control disabled.

+FLO=1

Software flow control enabled.

+FLO=2

Hardware flow control enabled.

FAX WIDTH

Type:

Configuration

Format:

AT [cmds] #Rn [cmds]

Description:

Sets the width of transmitted faxes.

Command

Function

#R0

215mm wide (1728 pixels).

#R1

255mm wide (2048 pixels).

#R2

303mm wide (2432 pixels).

FIRMWARE DOWNLOAD

Type:

Immediate

Format:

AT [cmds] UPX

Description:

Begins an XMODEM download to the modem firmware.

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Hn [cmds]

Description:

Selects the type of flow control to use.

Command

Function

&H0

Flow control disabled.

í &H3

Hardware flow control enabled.

&H4

Software flow control enabled.

HELP SCREENS

Type:

Immediate

Format:

AT <prefix>$

Example:

AT *$<CR>

Description:

Shows command help screens for all commands beginning with the given prefix, or no prefix if none is given.

Command

Function

$

Shows ATx help screen.

&$

Shows AT&x help screen.

*$

Shows AT*x help screen.

S$

Shows S-register help screen.

HOOK FLASH TIME

Type:

Register

Format:

AT [cmds] S56=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

10ms

Description:

Selects the amount of time the modem goes on-hook for a hook flash.

INACTIVITY TIMER

Type:

Register

Format:

AT [cmds] S50=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

10 seconds

Description:

Sets the length of time that the modem does not receive information before it disconnects.

LEASED-LINE AUTO-HANDSHAKE

Type:

Configuration

Format:

AT [cmds] *Mn [cmds]

Description:

Selects which modem performs the auto-handshaking.

Command

Function

í *M0

Originating modem auto-handshakes.

*M1

Answering modem auto-handshakes.

LEASED LINE RETRY TIME

Type:

Register

Format:

AT [cmds] S34=n [cmds]

Default:

30

Range:

0-255

Unit:

1 minute

Description:

When leased line is down, sets the time between checks on whether it is functioning again.

LEASED-LINE TRANSMISSION ATTENUATION

Type:

Configuration

Format:

AT [cmds] *Pn [cmds]

Default:

9

Range:

0 - 15

Unit:

-1 dBm

Description:

Sets the attenuation for transmission when in leased-line mode.

LINE TYPE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Selects line type.

Command

Function

&L0

Switched line.

&L1

2-wire leased line.

&L2

4-wire leased line.

LOCAL/REMOTE CONFIGURATION SELECTION

Format:

AT [cmds] S37=n [cmds]

Default:

0

Range:

0 - 127

Unit:

Bit-mapped

Description:

Selects local and remote profiles for copying.

Bit

Value

Function

2, 1, 0

í 000

001

010

011

100

101

Select local profile 0.

Select local profile 1.

Select local profile 2.

Select local profile 3.

Select current local configuration.

Select local factory defaults.

3

0

Not used.

6, 5, 4

í 000

001

010

011

100

101

Select remote profile 0.

Select remote profile 1.

Select remote profile 2.

Select remote profile 3.

Select current remote configuration.

Select remote factory defaults.

LOCAL SERIAL PORT SPEED

Type:

Register

Format:

AT [cmds] S20=n [cmds]

Range:

0 - 46

Description:

Sets serial port speed.

Value

Meaning

0

Sets 230.4Kbps speed.

1

Sets 115.2Kbps speed.

2

Sets 76.8Kbps speed.

í 3

Sets 57.6Kbps speed.

4

Sets 38.4Kbps speed.

5

Sets 19.2Kbps speed.

6

Sets 16.8Kbps speed.

7

Sets 14.4Kbps speed.

8

Sets 12Kbps speed.

9

Sets 9600bps speed.

10

Sets 7200bps speed.

11

Sets 4800bps speed.

12

Sets 2400bps speed.

13

Sets 1200bps speed.

14

Sets 460.8Kbps speed.

15

Sets 300bps speed.

16

Sets 307.2Kbps speed.

17

Sets 153.6Kbps speed.

18

Sets 102.4Kbps speed.

20

Sets 61.4Kbps speed.

21

Sets 51.2Kbps speed.

LOCAL SERIAL PORT SPEED (CONíT)

Value

Meaning

22

Sets 624Kbps speed.

24

Sets 124.8Kbps speed.

25

Sets 62.4Kbps speed.

26

Sets 41.6Kbps speed.

28

Sets 24.9Kbps speed.

29

Sets 20.8Kbps speed.

46

Sets 921.6Kbps speed.

LOCAL SERIAL PORT SPEED ON AUTO-ANSWER

Type:

Register

Format:

AT [cmds] S18=n [cmds]

Range:

0 - 46

Description:

Sets serial port speed when modem auto-answers an incoming call.

Value

Meaning

í 0

Auto-detect speed.

1

Sets 115.2Kbps speed.

2

Sets 76.8Kbps speed.

3

Sets 57.6Kbps speed.

4

Sets 38.4Kbps speed.

5

Sets 19.2Kbps speed.

6

Sets 16.8Kbps speed.

7

Sets 14.4Kbps speed.

8

Sets 12Kbps speed.

9

Sets 9600bps speed.

10

Sets 7200bps speed.

11

Sets 4800bps speed.

12

Sets 2400bps speed.

13

Sets 1200bps speed.

14

Sets 460.8Kbps speed.

15

Sets 300bps speed.

16

Sets 307.2Kbps speed.

17

Sets 153.6Kbps speed.

18

Sets 102.4Kbps speed.

20

Sets 61.4Kbps speed.

21

Sets 51.2Kbps speed.

22

Sets 624Kbps speed.

24

Sets 124.8Kbps speed.

25

Sets 62.4Kbps speed.

26

Sets 41.6Kbps speed.

28

Sets 24.9Kbps speed.

29

Sets 20.8Kbps speed.

32

Sets 230.4Kbps speed.

46

Sets 921.6Kbps speed.

LOCAL SERIAL PORT SPEED ON AUTO-ANSWER (U-1496 MODE)

Type:

Register

Format:

AT [cmds] S18=n [cmds]

Default:

2

Range:

0 - 15

Unit:

N/A

Description:

Sets serial port speed when modem auto-answers an incoming call.

Note:

This table should be used when in U-1496 compatible mode only.

Value

Meaning

0

Sets 76.8Kbps speed.

1

Sets 57.6Kbps speed.

2

Sets 38.4Kbps speed.

3

Sets 19.2Kbps speed.

4

Sets 16.8Kbps speed.

5

Sets 14.4Kbps speed.

6

Sets 12Kbps speed.

7

Sets 9600bps speed.

8

Sets 7200bps speed.

9

Sets 4800bps speed.

10

Sets 3600bps speed.

11

Sets 2400bps speed.

12

Sets 1800bps speed.

13

Sets 1200bps speed.

14

Sets 600bps speed.

15

Sets 300bps speed.

MANUFACTURER CAPTURE

Type:

Register

Format:

AT [cmds] S13=n [cmds]

Default:

0

Range:

0, 2

Unit:

N/A

Description:

Selects whether to attempt to capture the manufacturer of the other modem during handshaking.

Command

Function

í S13=0

Manufacturer capture disabled.

S13=2

Manufacturer capture enabled.

MODE SELECTION

Type:

Immediate

Format:

AT [cmds] +FCLASS=n

Description:

Sets what mode the modem will operate in.

Command

Function

+FCLASS=0

Data mode.

+FCLASS=1

Class 1 fax mode.

+FCLASS=2

Class 2 fax mode.

+FCLASS=2.0

Class 2.0 fax mode.

+FCLASS=6

ZyXELfax mode.

+FCLASS=8

Voice mode.

+FCLASS=Z

Parallel port fax mode. Sends fax data to printer on parallel port.

MODE SELECTION

Type:

Register

Format:

AT [cmds] S85=n

Description:

Sets what mode the modem will operate in.

Command

Function

S85=0

Data mode.

S85=1

Class 1 fax mode.

S85=2

Class 2 fax mode.

S85=6

ZyXELfax mode.

S85=8

Voice mode.

PANEL KEY

Type:

Configuration

Format:

AT [cmds] *Ln [cmds]

Description:

Locks the front panel key.

Command

Function

í *L0

Key unlocked.

*L1

Key locked.

PASSWORD FOR SUPERVISOR

Type:

Immediate

Format:

AT [cmds] *HS

Description:

Changes supervisory password. Requires current supervisory password.

PASSWORD TABLE

Type:

Immediate

Format:

AT [cmds] *Hn

Description:

Changes password for phone book entry n. Requires supervisory password.

PASSWORD TABLE DISPLAY

Type:

Immediate

Format:

AT [cmds] *V [cmds]

Description:

Displays the password table.

Note:

The supervisor password must be entered to execute this command.

POOR SIGNAL QUALITY REACTION

Type:

Configuration

Format:

AT [cmds] *Qn [cmds]

Description:

Configures the modemís reaction to poor signal quality.

Command

Function

*Q0

Modem does nothing during poor signal quality.

*Q1

Modem retrains during poor signal quality.

í *Q2

Modem fall-back during poor signal quality, and fall-forward when signal improves.

*Q3

Modem will disconnect during poor signal quality.

PRINT OPTIONS

Format:

AT [cmds] S73=n [cmds]

Default:

24

Range:

0 - 47

Unit:

Bit-mapped

Description:

Sets options for printer.

Bit

Value

Function

0

í 0

1

Printer connected to parallel port.

Printer connected to serial port.

1

í 0

1

Fast PCL mode enabled.

Fast PCL mode disabled.

2

í 0

1

Set printer resolution to 300dpi.

Set printer resolution to 150dpi.

3

0

í 1

Do not resize faxes to fit page.

Resize faxes to fit page.

5, 4

í 00

01

10

Select letter-size paper.

Select legal-size paper.

Select A4-size paper.

PRINT STORED FAXES

Type:

Immediate

Format:

AT [cmds] +FZP=n [cmds]

Description:

Prints faxes that have been stored in DRAM but not printed.

PRINTER PAPER SIZE

Type:

Configuration

Format:

AT [cmds] +FZS=n [cmds]

Description:

Sets the paper size n the printer.

Command

Function

í +FZS=0

Select letter-size paper.

+FZS=1

Select legal-size paper.

+FZS=2

Select A4-size paper.

PRINTER RESOLUTION

Type:

Configuration

Format:

AT [cmds] +FZR=n [cmds]

Description:

Sets the resolution to print on the printer.

Command

Function

í +FZR=0

Set printer resolution to 300dpi.

+FZR=1

Set printer resolution to 150dpi.

PRINTER TYPE

Format:

AT [cmds] S72=n [cmds]

Default:

Unidentified

Range:

0 - 4

Unit:

Bit-mapped

Description:

Sets options for printer.

Bit

Value

Function

0

0

1

Use Deskjet 500 and Laserjet II series PCL.

Use Laserjet III series and higher PCL.

1

0

1

PCL mode enabled.

PostScript Level I mode enabled.

PROTOCOL/SPEED - SWITCHED/LEASED LINE

Type:

Configuration

Format:

AT [cmds] &Nn [cmds]

Description:

Selects the current protocol and speed for switched and leased-line calls.

Command

Function

í &N0

Auto-select fastest common protocol.

&N1

Use V.33 14.4Kbps.

&N2

Use V.33 12Kbps.

&N3

Use V.32 9600bps trellis coded.

&N4

Use V.32 9600bps.

&N5

Use V.32 4800bps.

&N6

Use V.29 9600bps.

&N7

Use V.29 7200bps.

&N8

Use V.29 4800bps.

&N9

Use V.27bis 4800bps.

&N10

Use V.27bis 2400bps

&N11

Use V.26bis 2400bps.

&N12

Use V.23 1200/75bps.

&N13

Use V.23 600/75bps.

&N14

Use V.22bis 2400/1200bps.

&N15

Use V.22 1200bps.

&N16

Use V.21 300bps.

PROTOCOL/SPEED - SWITCHED/LEASED LINE (CONíT)

Command

Function

&N17

Use V.32bis 14.4Kbps.

&N18

Use V.32bis 12Kbps.

&N19

Use V.32bis 7200bps.

&N24

Use Bell 212A 1200bps.

&N25

Use Bell 103A 300bps.

&N32

Use FAX mode.

&N34

Use ZyXEL 19.2Kbps.

&N35

Use ZyXEL 16.8Kbps.

&N36

Use ZyXEL 14.4Kbps.

&N37

Use ZyXEL 12Kbps.

&N38

Use ZyXEL 9600bps.

&N39

Use ZyXEL 7200bps.

&N42

Use ZyCELL 14.4Kbps.

&N43

Use ZyCELL 12Kbps.

&N44

Use ZyCELL 9600bps.

&N45

Use ZyCELL 7200bps.

&N46

Use ZyCELL 4800bps.

&N62

Use V.34 28.8Kbps.

&N63

Use V.34 26.4Kbps.

&N64

Use V.34 24Kbps.

&N65

Use V.34 21.6Kbps.

&N66

Use V.34 19.2Kbps.

&N67

Use V.34 16.8Kbps.

&N68

Use V.34 14.4Kbps.

&N69

Use V.34 12Kbps.

&N70

Use V.34 9600bps.

&N71

Use V.34 7200bps.

&N72

Use V.34 4800bps.

&N73

Use V.34 2400bps.

PROTOCOL/SPEED - SWITCHED/LEASED LINE

Type:

Configuration

Format:

AT [cmds] S19=n [cmds]

Description:

Selects the current protocol and speed for switched and leased-line calls.

Command

Function

í S19=0

Auto-select fastest common protocol.

S19=1

Use V.33 14.4Kbps.

S19=2

Use V.33 12Kbps.

S19=3

Use V.32 9600bps trellis coded.

S19=4

Use V.32 9600bps.

S19=5

Use V.32 4800bps.

S19=6

Use V.29 9600bps.

S19=7

Use V.29 7200bps.

S19=8

Use V.29 4800bps.

S19=9

Use V.27bis 4800bps.

S19=10

Use V.27bis 2400bps

S19=11

Use V.26bis 2400bps.

S19=12

Use V.23 1200/75bps.

S19=13

Use V.23 600/75bps.

S19=14

Use V.22bis 2400/1200bps.

S19=15

Use V.22 1200bps.

S19=16

Use V.21 300bps.

S19=17

Use V.32bis 14.4Kbps.

S19=18

Use V.32bis 12Kbps.

S19=19

Use V.32bis 7200bps.

S19=24

Use Bell 212A 1200bps.

S19=25

Use Bell 103A 300bps.

S19=32

Use FAX mode.

S19=34

Use ZyXEL 19.2Kbps.

S19=35

Use ZyXEL 16.8Kbps.

S19=36

Use ZyXEL 14.4Kbps.

S19=37

Use ZyXEL 12Kbps.

PROTOCOL/SPEED - SWITCHED/LEASED LINE (CONíT)

Command

Function

S19=38

Use ZyXEL 9600bps.

S19=39

Use ZyXEL 7200bps.

S19=42

Use ZyCELL 14.4Kbps.

S19=43

Use ZyCELL 12Kbps.

S19=44

Use ZyCELL 9600bps.

S19=45

Use ZyCELL 7200bps.

S19=46

Use ZyCELL 4800bps.

S19=62

Use V.34 28.8Kbps.

S19=63

Use V.34 26.4Kbps.

S19=64

Use V.34 24Kbps.

S19=65

Use V.34 21.6Kbps.

S19=66

Use V.34 19.2Kbps.

S19=67

Use V.34 16.8Kbps.

S19=68

Use V.34 14.4Kbps.

S19=69

Use V.34 12Kbps.

S19=70

Use V.34 9600bps.

S19=71

Use V.34 7200bps.

S19=72

Use V.34 4800bps.

S19=73

Use V.34 2400bps.

READ PROFILE FROM REMOTE

Type:

Immediate

Format:

AT [cmds] *Rmn [cmds]

Description:

Reads configuration n from the remote modem and stores it in local profile m.

Profile

Meaning

0

Stored profile 0.

1

Stored profile 1.

2

Stored profile 2.

3

Stored profile 3.

4

Active configuration; may be applied only to remote.

5

Factory defaults; may be applied only to remote.

REDIAL

Type:

Immediate

Format:

AT [cmds] DL

Description:

Redials the last number dialed.

REDIAL CONTINUOUSLY

Type:

Immediate

Format:

A>

Description:

Redials the last number dialed up to 9 times.

Note:

Do not precede this command with AT or follow it with <CR>.

REMOTE CONFIGURATION REQUEST

Type:

Configuration

Format:

AT [cmds] *Fn [cmds]

Description:

Sets the modem to accept or deny requests for remote configuration.

Command

Function

í *F0

Deny remote configuration request.

*F1

Grant remote configuration request. &T4 must also be set.

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Xn [cmds]

Description:

Selects which result codes will be displayed.

Command

Function

X0

Basic result codes only enabled.

X1

Basic and connection speed result codes enabled.

X2

Basic and connection speed result codes and dialtone detection enabled.

X3

All result codes except dialtone detection enabled.

X4

All result codes enabled.

í X5

All result codes plus DTE speed and error control level enabled.

X6

All result codes plus ARQ enabled.

X7

All result codes plus ARQ and error control level enabled.

RING VOLUME

Format:

AT [cmds] Nn [cmds]

Default:

5

Range:

0 - 7

Unit:

N/A

Description:

Sets the volume of the ring sound. N0 disables the ring sound.

RTS/CTS DELAY

Type:

Register

Format:

AT [cmds] S26=n [cmds]

Default:

0

Range:

0-255

Unit:

10 ms

Description:

Sets the time in synchronous mode between the RTS signal going high and the CTS signal being set high.

SECONDARY CHANNEL

Type:

Configuration

Format:

AT [cmds] *Sn [cmds]

Description:

Selects the secondary channel.

Command

Function

í *S0

Secondary channel disabled.

*S1

Secondary channel enabled.

SECURITY CONFIGURATION

Type:

Configuration

Format:

AT [cmds] *Gn [cmds]

Description:

Sets security mode and options.

Command

Function

í *G0

Security disabled.

*G1

Security type I and password check enabled.

*G2

Security type I, callback, and password check enabled.

*G3

Security type II and password check enabled.

*G4

Security type II, callback, and password check enabled.

*G5

Security type II, callback, and password check enabled. Callback number sent by remote.

SERIAL PORT MODE

Type:

Configuration

Format:

AT [cmds] CMn [cmds]

Description:

Sets the operating mode of the serial interface.

Command

Function

í CM0

Single-stream mode.

CM1

Multistream mode.

SOFT RESET

Type:

Immediate

Format:

AT [cmds] Zn [cmds]

Description:

Restores modem profiles previously saved in non-volatile RAM using the &W command.

Command

Function

Z0

Restore profile 0.

Z1

Restore profile 1.

Z2

Restore profile 2.

Z3

Restore profile 3.

Z4

Restore factory defaults and use them as power-on defaults.

STATUS REGISTER BIT

Type:

Configuration

Format:

Read: AT [cmds] Sn.m=0 or 1 [cmds]

Write: AT [cmds] Sn.m=? [cmds]

Example:

AT S40.4=1 S51.3?<CR>

Description:

Sets/clears or reads bit m of register n.

STORE ACTIVE PROFILE

Type:

Immediate

Format:

AT [cmds] &Wn [cmds]

Description:

Writes the values for the active profile into the non-volatile RAM.

Command

Function

&W0

Write the active profile to stored profile 0.

&W1

Write the active profile to stored profile 1.

&W2

Write the active profile to stored profile 2.

&W3

Write the active profile to stored profile 3.

TELEPHONE STATUS

Type:

Configuration

Format:

AT [cmds] +VLH? [cmds]

Description:

Reports whether the telephone connected to the Line In jack is on-hook.

Value

Meaning

+VLH=0

Telephone is on-hook.

+VLH=1

Telephone is off-hook.

TEST MODES

Type:

Immediate

Format:

AT [cmds] &Tn

Description:

Performs and configures test modes.

Command

Function

&T0

End current test.

&T1

Begin local analog loopback test.

&T3

Begin local digital loopback.

&T4

Grant remote digital loopback request.

&T5

Deny remote digital loopback request.

&T6

Request remote digital loopback

&T7

Request remote digital loopback and self-test.

&T8

Begin local analog loopback and self-test.

&T9

Begin ISDN loopback.

&T10

Begin ISDN loopback and self-test.

TONE GENERATOR (PHONE KEYS)

Type:

Immediate

Format:

AT [cmds] +VTS=a

Example:

AT +VTS=* +VTS=A<CR>

Range:

0-9, A-D, #, *

Description:

Generates the DTMF tone for the characters in the string for the duration set with +VBT.

TONE GENERATOR (TIMED PHONE KEYS)

Type:

Immediate

Format:

AT [cmds] +VTS={a, n}

Example:

AT +VTS={*, 10}<CR>

Range:

a 0-9, A-D, #, *; x 0-255

Unit:

x .1 second

Description:

Generates the DTMF tone for duration x for the character a.

TONE GENERATOR (DIRECT ENTRY)

Type:

Immediate

Format:

AT [cmds] +VTS=[m, n, x]

Example:

AT +VTS=[2000, 3000, 12]<CR>

Range:

m 200-3300, n 200-3300, x 0-255

Unit:

m 1 Hz, n 1 Hz, x .1 second

Description:

Generates a dual-frequency tone for duration x at frequencies m and n.

TONE GENERATOR LENGTH

Format:

AT [cmds] +VTD=n,m [cmds]

Default:

n 50, m 70

Range:

0 - 255

Unit:

10ms

Description:

Sets the length of DTMF tones that are generated to n and the delay between tones to m.

U-1496 COMPATIBLE MODE

Type:

Register

Format:

AT [cmds] S62=n [cmds]

Description:

Selects whether the modem will use the settings from the U-1496 model or the normal settings. This affects register S18.

Command

Function

í S62=0

U-1496 compatible mode disabled.

S62=1

U-1496 compatible mode enabled.

VOICE AUTO-DISCONNECT

Type:

Configuration

Format:

AT [cmds] +VNH=n [cmds]

Description:

Configures the auto-disconnect mode.

Command

Function

í +VNH=0

Auto-disconnect disabled.

+VNH=1

Auto-disconnect enabled.

+VNH=2

Auto-disconnect enabled, but ATH disables auto-disconnect and does not hang up.

VOICE COMPRESSION

Type:

Configuration

Format:

AT [cmds] +VSM=n,m [cmds]

Description:

Selects the compression type and sample rate to be used for voice data storage.

Command

Function

m=7200

Select 7.2KHz sample rate.

m=8000

Select 8KHz sample rate.

m=9600

Select 9.6KHz sample rate.

m=11025

Select 11KHz sample rate.

n=1

Select Code Excited Linear Prediction compression.

n=2

Select 2-bit ZyXEL ADPCM compression.

n=3

Select 3-bit ZyXEL ADPCM compression.

n=4

Select 4-bit ZyXEL ADPCM compression.

n=30

Select 3-bit ZyXEL ADPCM compression with resync.

n=40

Select 4-bit DVI ADPCM compression.

n=80

Select 8-bit A-law PCM compression.

n=81

Select 8-bit Mu-law PCM compression.

VOICE CONNECT

Type:

Result code

Format:

VCON

Description:

Returned by the modem when a voice connection has been made.

VOICE DEVICE

Type:

Configuration

Format:

AT [cmds] +VLS=n [cmds]

Description:

Selects the I/O device for the DSP chip.

Command

Function

+VLS=0

Voice I/O disabled.

+VLS=1

Telephone connected to Line In jack.

+VLS=2

Phone line connected to switched line jack.

+VLS=8

External microphone.

+VLS=16

Internal speaker.

VOICE DTMF DETECTION

Type:

Configuration

Format:

AT [cmds] +VDD=m,n [cmds]

Default:

m 15, n 8

Range:

m 0-31, n 0-255

Unit:

m 1 dB, n .1 second

Description:

Sets the threshold of DTMF detection (m) and the minimum period of DTMF required to be detected (n).

VOICE GAIN - PLAYBACK

Type:

Configuration

Format:

AT [cmds] +VGT=n [cmds]

Default:

128

Range:

56-200

Unit:

N/A

Description:

Sets the gain for voice playback.

VOICE GAIN - RECORD

Type:

Configuration

Format:

AT [cmds] +VGR=n [cmds]

Default:

0

Range:

0, 56-200

Unit:

N/A

Description:

Sets the gain for received voice signals. A value of 0 sets automatic gain level.

VOICE INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] +VIT=n [cmds]

Default:

70

Range:

0-255

Unit:

.1 second

Description:

Sets the length of time that the modem does not receive any voice data before it returns to command mode.

VOICE INITIALIZE SETTINGS

Type:

Immediate

Format:

AT [cmds] +VIP [cmds]

Description:

Resets all voice mode settings to factory defaults.

VOICE OFF-HOOK SENSITIVITY

Type:

Configuration

Format:

AT [cmds] +VVT=n [cmds]

Default:

16

Range:

0-255

Unit:

N/A

Description:

Sets the sensitivity of detection of the remote site going off-hook. Lower numbers are more sensitive.

VOICE RECEIVE

Type:

Immediate

Format:

AT [cmds] +VRX

Description:

Begins receiving voice data.

VOICE RE-RING DETECT TIME

Type:

Configuration

Format:

AT [cmds] +VRA=n [cmds]

Default:

70

Range:

0-255

Unit:

.1 second

Description:

Sets the maximum time the modem will wait for the remote station to ring again before it assumes that it has gone off-hook.

VOICE RESYNC CLOCK

Type:

Configuration

Format:

AT [cmds] +VSY=n [cmds]

Default:

0

Range:

0-255

Unit:

50 ms

Description:

Sets the time between resync signals in the stored voice data.

VOICE RING DETECT TIME

Type:

Configuration

Format:

AT [cmds] +VRN=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

1 second

Description:

Sets the maximum time the modem will wait for the remote station to ring before it assumes that it went off-hook before it rang.

VOICE SILENCE DETECTION

Type:

Configuration

Format:

AT [cmds] +VSD=m,n [cmds]

Default:

Unidentified

Range:

m 0-31, n 0-255

Unit:

m 1 dB, n .1 second

Description:

Sets the threshold of silence detection (m) and the minimum period of silence required to be detected (n).

VOICE TRANSMIT

Type:

Immediate

Format:

AT [cmds] +VTX

Description:

Begins transmitting voice data.

WRITE PROFILE TO REMOTE

Type:

Immediate

Format:

AT [cmds] *Wmn [cmds]

Description:

Reads configuration n from the local modem and stores it in remote profile m.

Profile

Function

0

Stored profile 0.

1

Stored profile 1.

2

Stored profile 2.

3

Stored profile 3.

4

Active configuration; may be applied only to local.

5

Factory defaults; may be applied only to local.

Proprietary V.25bis Command Set

COMMAND SET - AT

Type:

Immediate

Format:

RST

Description:

Returns to AT command set.