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MICROLINK ISDN/TL PRO

ELSA, INC.

MICROLINK ISDN/TL PRO

Card Type

ISDN TA

Chip Set

Unidentified

I/O Options

Power connector power switch, DTE port, ISDN interface (RJ-11)

ISDN Data Rate

230.4Kbps

ISDN Modulation Protocol

V.110, V.120, X.75, PPP, T - online

Error Correction/Compression

MNP5, V.42bis

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

AC power connector

CN1

ISDN interface (RJ-11 connector)

CN3

25-pin DTE serial port

CN2

Power switch

SW1

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

PWR

Unidentified

On

Power is on

PWR

Unidentified

Off

Power is off

STS

Unidentified

On

ISDN link is good

STS

Unidentified

Blinking

ISDN link negotiation in progress

STS

Unidentified

Off

ISDN link is broken

LNE

Unidentified

On

Connection is being established

LNE

Unidentified

Blinking (slow)

Incoming call is received, but incompatible with unit

LNE

Unidentified

Blinking (fast)

Incoming call not yet accepted

LNE

Unidentified

Off

Connection is broken

TX

Unidentified

On

MICROLINK ISDN/TL PRO is receiving data from remote or DTE

TX

Unidentified

Off

MICROLINK ISDN/TL PRO is not receiving data from remote or DTE

RX

Unidentified

On

MICROLINK ISDN/TL PRO is transmitting data from remote or DTE

RX

Unidentified

Off

MICROLINK ISDN/TL PRO not transmitting data from remote or DTE

DTR

Unidentified

On

Terminal/computer ready for operation

DTR

Unidentified

Off

Terminal/computer not ready for operation

DSR

Unidentified

On

MICROLINK ISDN/TL PRO ready for operation

DSR

Unidentified

Off

MICROLINK ISDN/TL PRO ready for operation

RTS

Unidentified

On

Sending device is enabled

RTS

Unidentified

Off

Sending device is disabled

CTS

Unidentified

On

MICROLINK ISDN/TL PRO ready to send data

CTS

Unidentified

Off

MICROLINK ISDN/TL PRO not ready to send data

DCD

Red

On

V.110, V.100 or PPP connection established

DCD

Green

On

V.120, X.75, MNP5, V.42bis error correction connection established

DCD

Orange

On

Channel building enabled

DCD

N/A

Off

ISDN modulation protocol not established

TST

Unidentified

On

MICROLINK ISDN/TL PRO is performing a self diagnostic test

TST

Unidentified

Off

MICROLINK ISDN/TL PRO is not performing a self diagnostic test

SUPPORTED COMMAND SET

Basic AT Commands

AT, A/

A, E, V, Z

&F, &V, &W

Extended AT Commands

\T, \X

S Registers

S0, S1, S2, S3, S4, S5, S12, S30

 

Note: See MHI Help File for full command documentation.

Proprietary AT Command Set

CHANNEL BUNDLING

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects channel bundling mode

Command

Mode

í&N0

Channel bundling disabled

&N1

Channel bundling enabled

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Command

Mode

&M0

Asynchronous mode

&M1

Synchronous connect mode

&M2

Synchronous connect mode and set DTR high.

DATA CARRIER DETECT (DCD)

Type:

Configuration

Format:

AT [cmds] &Cn [cmds]

Description:

Selects whether the DCD option is enabled or disabled

Command

Function

&C0

DCD enabled

í&C1

DCD enabled after carrier signal detected

&C2

DCD dropped during disconnection

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

&S0

DSR forced high

&S1

DSR indicates B-channel switched through

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Command

Command State

Connection Establishment

Existing Connection

&D1

No effect

Connection establishment is aborted

ISDN terminal adapter shifts to command state

&D2

Existing condition terminated; stored digits are cleared

Connection establishment is aborted

ISDN terminal adapter shifts to command state; connection terminated

&D3

Existing condition terminated; stored digits are cleared and ISDN terminal adapter is reinitialized

Connection establishment is aborted and ISDN terminal adapter is reinitialized

and ISDN terminal adapter shifts to command state; ISDN terminal adapter is reinitialized

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials telephone number according to any modifiers included in the string

Note:

Any combination of modifiers can be used to produce the desired dial functions in sequence.

Command

Function

DL

Re-dial last number

DS=n, D/n

Dial stored telephone number n

DS, D/

Dial stored telephone number 0

DN

Establish a modem connection

DI

Establish a ISDN connection

D*

Phone number component for controlling PBX systems

D#

1TR6 protocol: Dialing code for external calls (valid for some ISDN branch exchanges)

DSS1 protocol: Sending complete (additional information required in some countries)

D;

Store digits preceding semicolon in NVRAM and dial them when an ATO command is executed without a data connection

HOOK CONTROL

Type:

Immediate

Format:

AT [cmds] Hn [cmds]

Description:

Selects whether the modem is on-hook or off-hook

Command

Function

H0

Modem commanded to go on-hook (hang-up)

LINE TYPE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Selects line type

Command

Line Type

&L0

Switched line (PSTN/Dial-up)

&L1

Group 0 leased-line. Manual connection

&L2

Group 0 leased-line. Automatic connection

ON-LINE

Type:

Immediate

Format:

AT [cmds] On [cmds]

Description:

Controls on-line command (data transmission) state options.

Note: The O command must be placed at the end of the command string.

Command

Function

O0

On-line command mode enabled

REACTION TO BUSY LINE/CONNECT MESSAGE

Type:

Configuration

Format:

AT [cmds] Xn [cmds]

Description:

Enables selection of tone detection and associated result code format options

Command

Function

X0

Busy line reported with NO CARRIER

X1

Busy line reported with NO CARRIER

X2

Busy line reported with NO CARRIER

X3

Busy line reported with BUSY

X4

Busy line reported with BUSY

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports model number in nnn format

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports firmware version number and release date

I4

Reports current parameter settings

I5

Reports serial number

I6

Reports product name and hardware release

I7

Reports plug and play ID text

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

Q0

Result code sending from ISDN terminal adapter enabled

Q1

Result code sending from ISDN terminal adapter disabled

Q2

Result code sending in answer mode disabled

RTS/CTS

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Selects RTS/CTS options

Command

Function

í&R0

CTS follows RTS

&R1

CTS forced high, RTS is ignored.

STORE NUMBERS

Type:

Configuration

Format:

AT [cmds] &Zm=n

Description:

Writes selected ISDN numbers n into the non-volatile memory at location m (0-9)

Note: Telephone numbers can include up to 36 characters.

Extended AT Command Set

BIT RATE (POST CONNECTION)

Type:

Configuration

Format:

AT [cmds] \Jn [cmds]

Description:

Determines fixed or variable bit rate

Command

Function

í\J0

Computer line bit rate remains unchanged

\J1

DTE rate matches DCE rate

BIT RATE ADAPTION IN ANSWER MODE

Type:

Configuration

Format:

AT [cmds] %Ln [cmds]

Description:

Determines whether V.110 mode line bit rate is adapted to the bit rate of the remote system

Command

Function

%L0

Bit rate is adapted to remote system

í%L1

Bit rate is adapted to remote system

%L2

Bit rate is not adapted; connection is terminated

%L3

Bit rate is adapted to remote system

COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Selects data compression

Command

Function

%C0

Data compression disabled

%C1

V.42bis enabled

%C2

V.42bis enabled

í%C3

V.42bis enabled

CONNECT MODE

Type:

Configuration

Format:

AT [cmds] \Nn [cmds]

Description:

Controls the type of connection the modem will operate in

Command

Function

\N0

V.110 normal mode enabled

\N1

V.110 direct mode enabled

\N2

X.75 error correction mode enabled. Connection is aborted if modem does not support X.75

\N3

X.75 error correction mode enabled. Modem fallback to V.110 if modem does not support X.75

\N4

V.120 error correction mode enabled. Connection is aborted if modem does not support V.120

\N5

V.120 error correction mode enabled. Modem fallback to V.110 if modem does not support V.120

\N6

V.120 or X.75 error correction mode enabled for incoming calls. Outgoing calls are performed with X.75 (Europe) or V.120 (America)

\N7

V.120 or X.75 error correction mode enabled for incoming calls. Outgoing calls are performed with X.75 (Europe) or V.120 (America). Modem fallback to V.110 if connection cannot be established

\N8

German T-Online service error correction mode enabled. VT-100 pages may be displayed with a VT-100 compatible terminal

\N9

German T-Online service error correction mode enabled. Btx and KIT graphics pages may be displayed with Btx or KIT decoder

\N10

HDLC transparent mode enabled (PPP conversion required)

DSR/CTS CONTROL

Type:

Configuration

Format:

AT [cmds] \Dn [cmds]

Description:

Controls DSR and CTS lines

Command

Function

\D0

DSR and CTS forced high

\D1

DSR indicates B-channel switched through, CTS forced high

\D2

DSR forced high, CTS follows DCD

\D3

DSR indicates B-channel switched through, CTS follows DCD

ERROR CORRECTION CONNECT MESSAGES

Type:

Configuration

Format:

AT [cmds] \Vn [cmds]

Description:

Determines the comprehensiveness of error correction CONNECT messages

Command

Function

\V0

Extended result codes disabled

\V1

Identifies error corrected connections

\V2

Identifies error corrected connections and types

í\V8

Comprehensive CONNECT messages

FIRMWARE UPLOAD

Type:

Immediate

Format:

AT [cmds] UPX [cmds]

Description:

Readies device to receive firmware upload in flash ROM at transfer rate last used, up to 57.6Kbps

FIRMWARE VERSION

Type:

Immediate

Format:

AT [cmds] %V [cmds]

Description:

Displays firmware version of the ISDN TA on the monitor

FLOW CONTROL TYPE

Type:

Configuration

Format:

AT [cmds] \Qn [cmds]

Description:

Sets type of flow control used by TA

Command

Function

\Q0

Flow control disabled

\Q1

Bi-directional XON/XOFF flow control enabled

\Q2

CTS flow control by DCE enabled

í\Q3

Bi-directional RTS/CTS flow control enabled

\Q4

Unidirectional XON/XOFF flow control by DCE enabled

\Q5

CTS flow control by DCE enabled. CTS low until connection established

\Q6

Bi-directional RTS/CTS flow control enabled. CTS low until connection established

ISDN BIT RATE (V.110)

Type:

Configuration

Format:

AT [cmds] %Bn [cmds]

Description:

Selects ISDN bit rate in V.110 mode

Command

Function

%B1200

1200bps

%B2400

2400bps

%B4800

4800bps

%B9600

9600bps

%B19200

19.2Kbps

í%B38400

38.4Kbps

%B48000

48.0Kbps

%B56000

56.0Kbps

%B64000

64.0Kbps

ISDN BIT RATE (V.120, X.75, HDLC)

Type:

Configuration

Format:

AT [cmds] %Sn [cmds]

Description:

Selects ISDN bit rate in V.110 mode

Command

Function

í%S0

64Kbps

%S1

56Kbps

LINE BIT RATE

Type:

Configuration

Format:

AT [cmds] %Gn [cmds]

Description:

Selects line bit rate control

Command

Function

í%G0

Line bit rate determined by serial port rate

%G1

Line bit rate set by %B

PPP ASYNC/SYNC CONVERSION

Type:

Configuration

Format:

AT [cmds] %Pn [cmds]

Description:

Enables/disables asynchronous/synchronous conversion for point-to-point protocol

Command

Function

í%P0

Asynchronous/synchronous conversion for point-to-point protocol disabled

%P1

Asynchronous/synchronous conversion for point-to-point protocol enabled

REGISTER CONTENT DISPLAY

Type:

Configuration

Format:

AT [cmds] %Sn [cmds]

Description:

Selects number of registers displayed per line

Command

Function

í%R0

Display two registers per line

%R1

Display one register per line

STORE NUMBERS

Type:

Configuration

Format:

AT [cmds] \Pmn [cmds]

Range:

m = 0-9

Description:

Up to ten ISDN numbers can be stored in NVRAM. Numbers n may have up to 36 characters

STORED NUMBERS

Type:

Immediate

Format:

AT [cmds] \F [cmds]

Description:

Displays ISDN numbers stored with the /P or &Z commands

Special Commands

AUTOMATIC DTR DIALING

Type:

Configuration

Format:

AT [cmds] $Dn [cmds]

Description:

Enables/disables automatic DTR dialing

Command

Function

$D0

DTR dialing disabled

$D1

DTR dialing enabled

DUMB MODE

Type:

Configuration

Format:

AT [cmds] -Hn [cmds]

Description:

Suppresses message echoing

Command

Function

í-H0

Normal operation

-H1

Dumb mode

EXTENDED CONFIGURATION PROFILE

Type:

Configuration

Format:

AT [cmds] *Wn [cmds]

Description:

Saves extended configuration profile

Command

Function

*W0

Saves extended configuration profile 0 to NVRAM and values in registers, S2, S3, S4, S5 & S12

*W1

Saves extended configuration profile 1 to NVRAM and values in registers, S2, S3, S4, S5 & S12

INVALID ESCAPE MESSAGES

Type:

Configuration

Format:

AT [cmds] *Qn [cmds]

Description:

Enables/disables CONNECT message after invalid escape

Command

Function

í*Q0

CONNECT message after invalid escape enabled

*Q1

CONNECT message after invalid escape disabled

SET/DISPLAY ACCEPTED MSN

Type:

Configuration

Format:

AT [cmds] +IMSN(n, ?)=(s) [cmds]

Range:

n=0,1

Description:

Limits acceptance to incoming calls with target MSN

Command

Function

+IMSNn=s

Store MSN

+IMSNn=

Clear MSN

+IMSN?

Display stored MSN

SET/DISPLAY D CHANNEL PROTOCOL (EUROPE)

Type:

Configuration

Format:

AT [cmds] +IDP=(xxxx) [cmds]

Description:

Selects D channel protocol

Command

Function

í+IDP=DSS1

DSS1 protocol enabled

+IDP=1TR6

1TR6 protocol enabled

SET/DISPLAY D CHANNEL PROTOCOL (USA)

Type:

Configuration

Format:

AT [cmds] +IDP(?)=(xxxx, ?) [cmds]

Description:

Selects D channel protocol

Command

Function

í+IDP=NI-1

NI-1 protocol enabled

+IDP=AT&T

AT&T 5ESS protocol enabled

+IDP=FV2N

Group 2 leased line protocol enabled (network side)

+IDP=FV2U

Group 2 leased line protocol enabled (user side)

+IDP?

Display selected protocol

+IDP=?

Display implemented protocols

SET/DISPLAY EAZ DIGIT

Type:

Configuration

Format:

AT [cmds] +IEAZ(?)=(n) [cmds]

Range

0-19, 255

Description:

Sets the EAZ terminal selection digit. Characters 0-9 will select digits 0-9, 10-19 will also select digits 0-9. 255 selects any digit for incoming calls, 0 for outgoing calls

Note:

Command is valid for German 1TR6 protocol only

Command

Function

+IEAZ=n

Store EAZ

+IEAZ?

Display EAZ

SET/DISPLAY DIRECTORY NUMBER

Type:

Configuration

Format:

AT [cmds] +IDN(n, ?)=(s) [cmds]

Range:

n=1,2 (B-channels), s=0-9

Description:

Sets and displays directory numbers. Directory number s can be up to 12 characters long

Command

Function

+IDNn=s

Set directory number

+IDNn=

Clear directory number

+IDNn?

Display directory number

SET/DISPLAY MSN

Type:

Configuration

Format:

AT [cmds] +ICLI(n, ?, /)=(s) [cmds]

Range:

s=0 - 9

Description:

Determines which multiple subscriber number is displayed to the remote side in outgoing calls as the originator address

Command

Function

+ICLI=s

Store originator MSN

+ICLIn=

Clear originator MSN

+ICLI=/

Clear originator MSN; suppress display to remote side

+ICLI?

Display stored originator MSN

SET/DISPLAY SPID

Type:

Configuration

Format:

AT [cmds] +ISPID(n, ?)=(s) [cmds]

Range:

n=1,2 (B-channels)

Description:

Sets and displays service profile ID

Command

Function

+ISPIDn=s

Set service profile ID

+ISPIDn=

Clear service profile ID

+ISPIDn?

Display service profile ID

STORE NUMBERS FOR CLOSED USER GROUPS

Type:

Configuration

Format:

AT [cmds] +ICLD(n, ?)=(s) [cmds]

Range:

n=1 - 3

Description:

Restricts call acceptance to remote systems

Command

Function

+ICLDn=s

Store a call number

+ICLDn=

Clear a call number

+ICDL?

Clear stored numbers

VERBOSE CONNECT MESSAGES

Type:

Configuration

Format:

AT [cmds] -Mn [cmds]

Description:

Controls text of verbose CONNECT messages

Command

Function

í-M0

Verbose CONNECT messages dependant on AT\V

-M1

Verbose CONNECT messages independent of AT\V

 

S(status) Registers

BIT-MAPPED REGISTER S14

Format:

AT [cmds] S14=n [cmds]

Range:

0-174

Unit:

Bit-mapped

Description:

Controls echo, result codes and display, dial mode, and answer/originate mode.

Bit

Dec. Value

Function

0

0

Not used

1

0

2

Command echo disabled

Command echo enabled

2

0

4

Result codes enabled

Result codes disabled

3

0

8

Display result codes in numeric format

Display result codes in verbose format

4

0

16

Smart mode

Dumb mode

5

0

32

Bit rate detection enabled

Bit rate detection disabled

6

0

64

Polling allowed during connection establishment

Polling not allowed during connection establishment

7

0

128

Answer mode enabled

Originate mode enabled

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Range:

0-253

Unit:

Bit-mapped

Description:

Selects jack type, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.

Bit

Dec. Value

Function

0,1

0

Not used

2

í 0

4

CTS follows RTS

CTS forced high

4, 3

0

8

í 16

24

DTR signal ignored

Modem goes to command mode on low DTR

Modem disconnects on low DTR; Auto-Answer is disabled.

Modem is initialized on low DTR

5

0

í 32

DCD forced high

DCD normal

6,7

0

Not used

BIT-MAPPED REGISTER S22

Format

AT [cmds] S22=n [cmds]

Range:

0-255

Unit:

Bit-mapped

Description:

Limits results codes

Bit

Dec. Value

Function

0-3

0

Not used

6 - 4

0

64

80

96

í 112

Busy line reported with NO CARRIER

Busy line reported with NO CARRIER

Busy line reported with NO CARRIER

Busy line reported with BUSY

Busy line reported with BUSY

7

0

Not used

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Range:

0-111

Unit:

Bit-mapped

Description:

Selects synchronous/asynchronous mode, and line type

Bit

Dec. Value

Function

1, 0

í 0

1

2

Asynchronous mode

Synchronous mode

Synchronous operation, DTR dialing

2, 3

í 0

4

8

Switched line

Group 0 leased line, manual connection established

Group 0 leased line, automatic connection established

4-7

0

Not used

BIT-MAPPED REGISTER S28

Format

AT [cmds] S28=n [cmds]

Range:

0-31

Unit:

Bit-mapped

Description:

Controls V.110 rate adaption

Bit

Dec. Value

Function

0, 1

0

Not used

2, 3

0

í 4

8

12

V.110 bit rate adaptation enabled

V.110 bit rate adaptation enabled

V.110 bit rate adaptation disabled

V.110 bit rate adaptation enabled

4-7

0

Not used

BIT-MAPPED REGISTER S31

Format

AT [cmds] S31=n [cmds]

Unit:

Bit-mapped

Description:

Enables/disables DTR dialing

Bit

Dec. Value

Function

0-4

0

Not used

5

í 0

32

DTR dialing enabled

DTR dialing disabled

6, 7

0

Not used

BIT-MAPPED REGISTER S36

Type:

Register

Format

AT [cmds] S36=n [cmds]

Description:

Selects the action of the modem if it fails to connect with the error-correction protocol set in &Q.

Bit

Dec. Value

Function

0-3

0

Normal mode (V.110)

 

1

Direct mode (V.110)

 

2

X.75 mode

 

3

X.75; fallback to V.110 mode

 

4

V.120 mode

 

5

V.120; fallback to V.110 mode

 

6

X.75 or V.120 mode

 

í 7

X.75 or V.120; fallback to V.110 mode

 

8

X.75 VT-100 mode (German T-Online service)

 

9

X.75 CEPT & KIT mode (German T-Online service)

4-6

0

Reserved

7

í 0

128

Channel bundling disabled

Channel bundling enabled

BIT-MAPPED REGISTER S37

Type:

Register

Format

AT [cmds] S37=n [cmds]

Description:

Sets the maximum allowable ISDN line bit rate in V.110 operation

Bit

Dec. Value

Function

0-4

5

ISDN line bit rate at 1200bps

 

6

ISDN line bit rate at 2400bps

 

7

ISDN line bit rate at 4800bps

 

9

ISDN line bit rate at 9600bps

 

13

ISDN line bit rate at 19.2Kbps

 

í21

ISDN line bit rate at 38.4Kbps

 

22

ISDN line bit rate at 48.0Kbps

 

23

ISDN line bit rate at 56.0Kbps

 

24

ISDN line bit rate at 64.0Kbps

5

0

Reserved

6

í0

64

ISDN bit rate depends on serial port rate

ISDN bit rate determined by %B

7

í0

128

Fixed serial port rate

serial port rate adapted to ISDN line rate

BIT-MAPPED REGISTER S46

Type:

Register

Format:

AT [cmds] S46=n [cmds]

Description:

Selects active error correction and compression protocols

Bit

Dec. Value

Function

0-3

0

Data compression disabled

 

1

V.42bis data compression enabled

 

2

V.42bis data compression enabled

 

í 3

V.42bis data compression enabled

4-7

0

Reserved

BIT-MAPPED REGISTER S51

Type:

Register

Format

AT [cmds] S51=n [cmds]

Description:

Sets flow control options

Bit

Dec. Value

Function

0-3

0

No handshake

 

1

Bi-directional XON/XOFF flow control enabled

 

2

Unidirectional RTS/CTS flow control enabled

 

3

Bi-directional RTS/CTS flow control enabled

 

í4

Unidirectional XON/XOFF flow control by DCE enabled

 

5

CTS flow control by DCE enabled. CTS low until connection established

 

6

Bi-directional RTS/CTS flow control enabled. CTS low until connection established

4

í0

16

XON/XOFF remote passthrough disabled

XON/XOFF remote passthrough enabled

5-7

0

Reserved

BIT-MAPPED REGISTER S52

Type:

Register

Format

AT [cmds] S52=n [cmds]

Description:

Sets DSR, CTS, DCD options

Bit

Dec. Value

Function

0, 1

í0

DSR forced high, CTS forced high

 

1

DSR indicates B-channel switched through, CTS forced high

 

2

DSR forced high, CTS follows DCD

 

3

DSR indicates B-channel switched through, CTS follows DCD

2, 3

í0

8

DCD either forced high, or indicates existing connection ( depending on S21)

DCD off for .5 seconds during connection

4,5

í0

32

DSR forced high, CTS forced high

DSR indicates B-channel switched through, CTS forced high

6,7

0

64

128

CTS determined by \D

CTS follows RTS

CTS follows RTS after .5…6 seconds

BIT-MAPPED REGISTER S87

Type:

Register

Format

AT [cmds] S87=n [cmds]

Description:

Read only register. Reports current bit rate

Bit

Dec. Value

Function

0-4

0

No connection established

 

4

ISDN line bit rate at 1200bps

 

6

ISDN line bit rate at 2400bps

 

7

ISDN line bit rate at 4800bps

 

9

ISDN line bit rate at 9600bps

 

13

ISDN line bit rate at 19.2Kbps

 

í21

ISDN line bit rate at 38.4Kbps

 

22

ISDN line bit rate at 48.0Kbps

 

23

ISDN line bit rate at 56.0Kbps

 

24

ISDN line bit rate at 64.0Kbps

5

í0

32

One-channel connection

2nd ISDN connection with 128/112Kbps (2nd B-channel with 56/64Kbps)

6, 7

0

Reserved

BIT-MAPPED REGISTER S93

Type:

Register

Format

AT [cmds] S93=n [cmds]

Description:

Determines serial port bit rate

Bit

Dec. Value

Function

0-4

0

No connection established

 

5

Serial port bit rate at 1200bps

 

6

Serial port bit rate at 2400bps

 

7

Serial port bit rate at 4800bps

 

9

Serial port bit rate at 9600bps

 

13

Serial port bit rate at 19.2Kbps

 

í21

Serial port bit rate at 38.4Kbps

 

22

Serial port bit rate at 48.0Kbps

 

23

Serial port bit rate at 56.0Kbps

 

24

Serial port bit rate at 64.0Kbps

5

0

Reserved

6, 7

0

64

128

192

Data format 8N1

Data format 7E1

Data format 7O1

Data format 7N2

BIT-MAPPED REGISTER S95

Type:

Register

Format

AT [cmds] S95=n [cmds]

Description:

Determines result codes

Bit

Dec. Value

Function

0-3

0

No modified CONNECT messages

 

1

Indicates error-corrected connections

 

2

Indicates error-corrected connections and error correction method

 

í8

Extensive CONNECT result codes

4

í0

16

CONNECT messages with bit rate

CONNECT messages without bit rate

5

í0

32

CONNECT messages after invalid escape sequence

No CONNECT messages after invalid escape sequence

6, 7

í0

128

Result codes enabled or disabled (depending on S14)

Result codes disabled in answer mode

BIT-MAPPED REGISTER S96

Type:

Register

Format

AT [cmds] S96=n [cmds]

Description:

Sets AT command interpreter

Bit

Dec. Value

Function

0,1

0

Reserved

2

í0

Message ‘Press any key to continue’ enabled

 

4

Message ‘Press any key to continue’ disabled

3,4

í0

8

16

24

German user interface (European default)

English user interface (US default)

Reserved

Reserved

5,6

0

Reserved

7

í0

128

Disable error message for access of invalid or protected S register (® OK)

Enable error message for access of invalid or protected S register (® ERROR)

BIT-MAPPED REGISTER S151

Type:

Register

Format

AT [cmds] S151=n [cmds]

Description:

Controls ISDN D channel

Bit

Dec. Value

Function

0

í0

1

Send error result code to network if device is busy or not ready

Do not send error result code to network if device is busy or not ready

1

í0

Incoming calls confirmed with ALERT

 

1

No ALERT for incoming calls

2

í0

4

V.120: LLC (low layer capability) not signaled in D-channel

V.110: BC (bearer capability) and LLC not signaled in D-channel

V.120: LLC (low layer capability) signaled in D-channel

V.110: BC (bearer capability) and LLC signaled in D-channel

3

0

Reserved

4

0

16

Incoming calls on B-channel 1 will be accepted

Incoming calls on B-channel 1 will be ignored

5

0

32

Incoming calls on B-channel 2 will be accepted

Incoming calls on B-channel 2 will be ignored

6,7

0

Reserved

BIT-MAPPED REGISTER S153

Type:

Register

Format

AT [cmds] S153=n [cmds]

Description:

Controls CONNECT/NO CARRIER message options

Bit

Dec. Value

Function

0

í0

1

Remote number is not displayed after CONNECT

Remote number is displayed after CONNECT

1

í0

2

Remote number is not displayed after RING

Remote number is displayed after RING

2

í0

MSN/EAZ dialed by the remote side is not displayed

 

4

MSN/EAZ dialed by the remote side is displayed if bit 0 and/or 1=1

3-5

0

Reserved

6

í0

64

Result codes are not displayed

Result codes are displayed

7

í0

128

Disconnect reason not displayed

Disconnect reason reported after NO CARRIER according to S154/S155

BIT-MAPPED REGISTER S158

Type:

Register

Format

AT [cmds] S158=n [cmds]

Description:

Controls CONNECT/NO CARRIER message options

Bit

Dec. Value

Function

0

í00

01

02

No connection was established

Current/last connection on B-channel 1

Current/last connection on B-channel 2

BIT-MAPPED REGISTER S159

Type:

Register

Format

AT [cmds] S159=n [cmds]

Description:

Shows current status of ISDN interface

Bit

Dec. Value

Function

0

í0

1

No power on S0 bus detected

Normal or restricted power on S0 bus

1

0

Reserved

2

0

4

S0 bus not activated

S0 bus activated

3

0

8

No TEI assigned

TEI assigned

4-7

0

Reserved

BIT-MAPPED REGISTER S160

Type:

Register (read only)

Format

AT [cmds] S160=n [cmds]

Description:

Shows information about last call on ISDN interface

Value (Hex)

Function

00h

No incoming call

10h

Call is currently being reported

11h

Call accepted

12h

Call withdrawn or answered by another device on the S0 bus

20h

Call had wrong bearer capability or service indicator

21h

Call had wrong MSN or EAZ

30h

DTR was off, call was rejected

31h

ISDN adapter was already connected or establishing another connection

40h

Number check not OK

41h

Number check not OK, no number was given

BIT-MAPPED REGISTER S162

Type:

Register

Format

AT [cmds] S162=n [cmds]

Description:

Selects preferred B-channel

Bit

Dec. Value

Function

0,1

í0

1

2

Any B-channel is used: Leased line operation: B1 channel is used

B1 channel has priority

B2 channel has priority

BIT-MAPPED REGISTER S171

Type:

Register

Format

AT [cmds] S171=n [cmds]

Description:

Specifies details of X.75 protocol

Bit

Dec. Value

Function

0-2

í0

1

2

3

4

Data block size 128 bytes

Data block size 256 bytes

Data block size 512 bytes

Data block size 1024 bytes

Data block size 2048 bytes

3

0

Reserved

4

0

16

Async/sync conversion for PPP disabled

Async/sync conversion for PPP enabled

5

0

32

64Kbps (Europe default)

56Kbps (US default)

6,7

í0

64

128

192

T.70NL header disabled

T.70NL header disabled

T.70NL header enabled. Block size reduced by 2 bytes

T.70NL header enabled. Block size extended by 2 bytes

BIT-MAPPED REGISTER S172

Type:

Register

Format

AT [cmds] S172=n [cmds]

Description:

Specifies details of V.120 protocol

Bit

Dec. Value

Function

0

í0

1

Data block size 127 bytes

Data block size 259 bytes

1-6

0

Reserved

7

í0

128

64Kbps (Europe default)

56Kbps (US default)

BIT-MAPPED REGISTER S173

Type:

Register

Format

AT [cmds] S173=n [cmds]

Description:

Specifies details of V.110 protocol

Bit

Dec. Value

Function

0

0

Reserved

1-2

0

2

4

6

No parity, asynchronous

Odd parity, asynchronous

Even parity, asynchronous

"1" parity, asynchronous

3

í0

8

RTS, DCD, DSR normal operations

V.110 half duplex operation, asynchronous

4

í0

16

Bit rate tolerance 12.5%, asynchronous

Bit rate tolerance 25%, asynchronous

5

í0

32

1 stop bit, asynchronous

2 stop bit 2, asynchronous

6-7

í0

64

128

192

8 bits/character, asynchronous (no parity bit)

7 bits/character, asynchronous (no parity bit)

6 bits/character, asynchronous (no parity bit)

5 bits/character, asynchronous (no parity bit)

BIT-MAPPED REGISTER S175

Type:

Register

Format

AT [cmds] S175=n [cmds]

Description:

Controls additional settings for channel bundling

Bit

Dec. Value

Function

0,1

0

Reserved

2

í0

4

Static channel bundling (second B-channel always active)

Dynamic channel bundling (second B-channel active when needed)

3

í0

8

Connection hold time starts when throughput falls below limit

Connection hold time starts with each charge unit

4

í0

16

Secondary connection with the same number as primary connection

Secondary connection with the same number as primary connection without SPC flag

5

í0

32

Supplied number not required for identification of second B-channel

Supplied number required for identification of second B-channel

6

í0

64

CONNECT reported after primary connection establishment

CONNECT reported after secondary connection establishment

7

í0

128

Normal DSR function

DSR off when secondary connection established

CALL INDICATION DELAY

Type:

Register

Format

AT [cmds] S152=n [cmds]

Range:

0-50

Unit:

10ms

Description:

Sets the delay for indication of incoming calls

CHANNEL BUNDLING HOLD TIME

Type

Register

Format

AT [cmds] S178=n [cmds]

Range

0-255 x 10

Unit

10sec

Description

Defines amount of time the second B channel is held after the throughput falls below the limit set in register S176. Register used only if bit 2 of Register S175 is set.

CHANNEL BUNDLING THROUGHPUT AVERAGING

Type

Register

Format

AT [cmds] S177=n [cmds]

Range

0-32

Unit

1sec

Description

Defines time over which the average data throughput is calculated in order to smooth fluctuations throughout. Default=0

CHANNEL BUNDLING THROUGHPUT LIMIT

Type

Register

Format

AT [cmds] S176=n [cmds]

Range

0-255 x 100

Unit

100 bytes/sec

Description

Defines data throughput limit that must be exceeded for second B-channel to be established. Register used only if bit 2 of Register S175 is set.

CHARGE UNITS - CURRENT (EUROPE)

Type

Register

Format

AT [cmds] S191=n [cmds]

Range

10

Unit

ASCII

Description

Contains number of charge units or total charge for current or last connection

CHARGE UNITS - TOTAL (EUROPE)

Type

Register

Format

AT [cmds] S192=n [cmds]

Range

10

Unit

ASCII

Description

Contains total number of charge units or total charge for all previous connections.

0 resets register

CHARGED UNITS

Type

Register

Format

AT [cmds] S167=n [cmds]

Range

0-255

Unit

10

Description

Sets the maximum number of charged units which my be used within a certain number of days set in register S168

DATA PACKET REPITITIONS RECEIVED

Type:

Register

Format

AT [cmds] S156=n [cmds]

Range:

0-255

Description:

Shows the ratio of repetitions per 250 data packets received on the control channel

DATA PACKET REPITITIONS SENT

Type:

Register

Format

AT [cmds] S157=n [cmds]

Range:

0-255

Description:

Shows the ratio of repetitions per 250 data packets sent on the control channel

ERROR CODES (EURO-ISDN)

Type:

Register (read only)

Format

AT [cmds] S165=n [cmds]

Description:

Displays detailed error codes

ERROR LOCATION

Type:

Register (read only)

Format

AT [cmds] S154=n [cmds]

Description:

Error code indicates location where the error occurred. Error codes unidentified

ERROR REASON

Type:

Register (read only)

Format

AT [cmds] S155=n [cmds]

Description:

Error code indicates reason for failure. Error codes unidentified

LAST CALL MSN/EAZ

Type

Register

Format

AT [cmds] S193=n [cmds]

Range

10

Unit

ASCII

Description

Contains the multiple subscriber number (MSN, with DSS1 protocol) or the EAZ (terminal selection digit, with 1TR6 protocol) dialed by remote side for last incoming call. 0 clears register

LEASED LINE CONNECTION DELAY

Type:

Register

Format

AT [cmds] S40=n [cmds]

Range:

5-255

Unit:

10 secondS

Description:

Controls the amount of time before the ISDN terminal adapter automatically establishes a group 0 leased line connection

REMAINING CHARGED UNITS

Type

Register

Format

AT [cmds] S169=n [cmds]

Range

0-255

Unit

10

Description

Holds the number of charged units which can still be used in the cost monitoring period. 0 disables

REMAINING TIME PERIOD

Type

Register

Format

AT [cmds] S170=n [cmds]

Range

0-255

Description

Holds the number of days remaining until the number of charged units is reset to the maximum limit set in S167.

REMOTE NUMBER

Type

Register

Format

AT [cmds] S190=n [cmds]

Range

36

Unit

ASCII

Description

Contains ISDN number of current or last remote system. 0 resets register

SERVICE INDICATOR

Type:

Register (read only)

Format

AT [cmds] S163=n [cmds]

Description:

Shows service indicator of last incoming call. 007 indicates a bit rate adaptation to 56Kbps. Otherwise, the data transfer occurred at 64Kbps.

SERVICE INDICATOR

Type:

Register (read only)

Format

AT [cmds] S164=n [cmds]

Description:

Shows service indicator of last incoming call. 169 indicates a bit rate adaptation to 56Kbps. Otherwise, the data transfer occurred at 64Kbps.

TIME PERIOD FOR COST MONITORING

Type

Register

Format

AT [cmds] S168=n [cmds]

Range

0-255

Description

Sets the maximum number of days the charged units set in S167 may be used