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MODEM MASTER 8400/56K

SILICOM MULTIMEDIA SYSTEMS, INC.

MODEM MASTER 8400/56K

Card Type

Modem

Chip Set

Unidentified

I/O Options:

Line in, line out, microphone in, speaker out

Maximum Modem Rate

56.0Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103/212A

ITU-T V.21, V.22, V.22bis, V.23, V.32bis, V.34, V.34bis, X2

Fax Modulation Protocol

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

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

I

Data Bus

16-bit ISA

CONNECTIONS

Function

Label

Function

Label

Line in (RJ-11)

CN1

Microphone in

CN3

Line out (RJ-11)

CN2

Speaker out

CN4

SUPPORTED COMMAND SET

Basic AT Commands

AT, +++, A/

A, B, E, F, H, M, O, P, T, V

&C, &G, &T, &U

Special Commands

#CID

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S38

 

Note:

See MHI Help File for full command documentation.

PROPRIETARY AT COMMAND SET

BREAK OPTIONS

Type:

Configuration

Format

AT [cmds] &Y n [cmds]

Description:

Sets the method for break transmission during error-control and ASB connections.

Command

Function

&Y0

Destructive signaling

&Y1

Destructive/expedited signaling

&Y2

In-sequence/expidated signaling

&Y2

In-sequence signaling

CONNECT MODE

Type:

Configuration

Format:

AT [cmds] &M n [cmds]

Description:

Controls the type of connection the modem will operate in

Command

Function

&M0

Normal mode enabled

&M4

Normal/MNP reliable mode enabled

&M5

MNP reliable mode enabled

CONTINUOUSLY REPEAT PREVIOUS COMMAND

Type:

Immediate

Format:

A>

Description:

Continuosly repeats previous command

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

DATA COMPRESSION

Type:

Configuration

Format:

AT [cmds] &K n [cmds]

Description:

Enables data compression options

Command

Function

&K0

Data compression disabled

&K1

Automatic data compression enabled

&K2

Data compression enabled

&K3

Selective data compression enabled

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &S n [cmds]

Description:

Selects DSR options

Command

Function

&S0

DSR forced high

&S1

DSR high only while modem is handshaking or connected

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &D n [cmds]

Description:

Selects modem response to DTR

Command

Function

&D0

Modem does not respond to DTR

&D1

Modem goes to command mode on DTR toggle

&D2

Modem goes to command mode and disconnects (hangs up) on DTR toggle;

Auto-Answer is disabled on low DTR.

&D3

Modem is initialized on DTR toggle

DCE LINE SPEED (MAXIMUM)

Type:

Configuration

Format

AT [cmds] &N n [cmds]

Description:

Sets the maximum allowable data exchange rate attempted during handshake process.

Command

Function

&N0

Highest link speed

&N1

300bps

&N2

1200bps

&N3

2400bps

&N4

4800bps

&N5

7200bps

&N6

9600bps

&N7

12.0Kbps

&N8

14.4Kbps

&N9

16.8Kbps

&N10

19.2Kbps

&N11

21.6Kbps

&N12

24.0Kbps

&N13

26.4Kbps

&N14

28.8Kbps

&N15

31.2Kbps

&N16

33.6Kbps

&N17

33.6Kbps

&N18

33.3Kbps

&N19

37.3Kbps

&N20

42.6Kbps

&N21

44.0Kbps

&N22

45.3Kbps

&N23

46.6Kbps

&N24

48.0Kbps

&N25

49.3Kbps

&N26

50.6Kbps

&N27

52.0Kbps

&N28

53.3Kbps

&N29

54.6Kbps

&N30

56.0Kbps

&N31

57.3Kbps

DCE LINE SPEED (MINIMUM)

Type:

Configuration

Format

AT [cmds] &U n [cmds]

Description:

Sets the minimum allowable data exchange rate attempted during handshake process.

Command

Function

&U0

Variable link rate

&U1

300bps

&U2

1200bps

&U3

2400bps

&U4

4800bps

&U5

7200bps

&U6

9600bps

&U7

12.0Kbps

&U8

14.4Kbps

&U9

16.8Kbps

&U10

19.2Kbps

&U11

21.6Kbps

&U12

24.0Kbps

&U13

26.4Kbps

&U14

28.8Kbps

&U15

31.2Kbps

&U16

33.6Kbps

&U17

33.6Kbps

&U18

33.3Kbps

&U19

37.3Kbps

&U20

42.6Kbps

&U21

44.0Kbps

&U22

45.3Kbps

&U23

46.6Kbps

&U24

48.0Kbps

&U25

49.3Kbps

&U26

50.6Kbps

&U27

52.0Kbps

&U28

53.3Kbps

&U29

54.6Kbps

&U30

56.0Kbps

&U31

57.3Kbps

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

DP

Pulse dialing enabled

DR

Answer mode enabled; originate mode disabled following handshake initiation.

DSn

Dial stored telephone number n

DT

Tone dialing enabled/Pulse dialing disabled

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 off-hook for specified time before returning on-hook.

D@

Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by 5 seconds of silence is received 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.

D$

HELP; dial commands

FACTORY DEFAULT PROFILE

Type:

Configuration

Format:

AT [cmds] &F [cmds]

Description:

Sets values in active profile to values found in the default profile

&F0

Load factory configuration 0; flow control disabled

&F1

Load factory configuration 1; hardware flow control enabled

&F2

Load factory configuration 2; software flow control enabled

FIXED DTE SPEED

Type:

Configuration

Format:

AT [cmds] &B n [cmds]

Description:

Selects fixed DTE speed options

Command

Function

&B1

Fixed DTE speed enabled

&B2

Fixed DTE speed in error correction mode enabled

FLOW CONTROL - RX

Type:

Configuration

Format:

AT [cmds] I n [cmds]

Description:

Enables receive flow control options

Command

Function

&I0

Flow control disabled

&I1

XON/XOFF flow control enabled

&I2

XON/XOFF filtered flow control enabled

&I3

HP enq/ack host mode enabled

&I4

HP enq/ack terminal mode enabled

&I5

XON/XOFF for non-error corrected mode enabled

FLOW CONTROL - TX

Type:

Configuration

Format:

AT [cmds] &H n [cmds]

Description:

Enables transmission flow control options

Command

Function

&H0

Flow control disabled

&H1

RTS to CTS flow control enabled

&H2

XON/XOFF flow control enabled

&H3

RTS to CTS & XON/XOFF flow control enabled

HELP - AMPERSAND COMMANDS

Type:

Immidiate

Format:

AT [cmds] &$ [cmds]

Description:

Displays ampersand command help file

PULSE DIALING RATIO

Type:

Configuration

Format:

AT [cmds] &P n [cmds]

Description:

Selects pulse dial make/break ratio

Command

Function

&P0

39/61ms at 10pps (North America)

&P1

33/67ms at 10pps (Europe)

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] I n [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product code

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports product ID string

I4

Reports current settings

I5

Reports NVRAM settings

I6

Reports link diagnostics

I7

Reports product configuration

I9

Reports plug and play enumeration

I11

Reports link diagnostics

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Q n [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

Q0

Result code sending enabled

Q1

Result code sending disabled

Q2

Result code sending enabled in originate mode

RESULT CODES

Type:

Configuration

Format:

AT [cmds] &A n [cmds]

Description:

Selects result code options

Command

Function

&A0

ARQ result codes disabled

&A1

ARQ result codes enabled

&A2

Modulation codes enabled

&A3

Extended result codes enabled

RTS

Type:

Configuration

Format:

AT [cmds] &R n [cmds]

Description:

Selects RTS options

Command

Function

&R1

RTS is ignored in command mode.

&R2

Receive to DTE/ RTS forced high

SELECT CALL PROGRESS RESULT CODES

Type:

Configuration

Format:

AT [cmds] X n [cmds]

Description:

Enables selection of tone detection and associated result code format options

Command

Function

X0

Basic result codes enabled

X1

Extended result codes enabled

SOFT RESET

Type:

Immediate

Format:

AT [cmds] Y n [cmds]

Description:

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

Command

Function

Y0

Write the active profile to stored profile 0

Y1

Write the active profile to stored profile 1

Y2

Load factory configuration 0; flow control disabled

Y3

Load factory configuration 1; hardware flow control enabled

Y4

Load factory configuration 2; software flow control enabled

SOFT RESET

Type:

Immediate

Format:

AT [cmds] Z n [cmds]

Description:

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

Command

Function

Z0

Y setting determines reset

Z1

Write the active profile to stored profile 0

Z2

Write the active profile to stored profile 1

Z3

Load factory configuration 0; flow control disabled

Z4

Load factory configuration 1; hardware flow control enabled

Z5

Load factory configuration 2; software flow control enabled

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] L n [cmds]

Description:

Controls speaker volume

Command

Function

L0

Low volume setting

L1

Low volume setting

L2

Medium volume setting

L3

Highest volume setting

S(STATUS) - REGISTERS

BIT-MAPPED REGISTER S13

Type:

Register

Format:

AT [cmds] S13= n [cmds]

Range:

Unidentified

Unit:

Bit-mapped

Description:

Controls DTR reset, DS0, quick retrain, and escape sequence options

Bit

Value

Function

0

0

1

Reset on low DTR disabled

Reset on low DTR enabled

1

0

1

Reduced non-error corrected transmit buffer disabled

Reduced non-error corrected transmit buffer enabled

2

0

1

DEL=backspace disabled

Set DEL=backspace

3

0

1

DS0 on DTR disabled

DS0 on DTR enabled

4

0

1

DS0 on reset disabled

DS0 on reset enabled

5

0

Not used

6

0

1

Quick retrain enabled

Quick retrain disabled

7

0

1

Escape code hang-up disabled

Escape code hang-up enabled

BIT-MAPPED REGISTER S15

Format

AT [cmds] S15= n [cmds]

Range:

Unidentified

Unit:

Bit-mapped

Description:

Selects compression, and MNP mode.

Bit

Value

Function

1 - 0

00

01

MNP/V.42 in V.22 mode enabled

MNP/V.42 in V.22 mode disabled

2

00

01

MNP/V.42 in V.32 mode enabled

MNP/V.42 in V.32 mode disabled

3

0

1

MNP handshake enabled

MNP handshake disabled

4

0

1

MNP4 enabled

MNP4 disabled

5

0

1

MNP3 enabled

MNP3 disabled

6

0

1

Unusual MNP incompatibility enabled

Unusual MNP incompatibility disabled

7

00

01

10

11

V.42 enabled

V.42 disabled

V.42 detect phase enabled

V.42 detect phase disabled

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27= n [cmds]

Range:

Unidentified

Unit:

Bit-mapped

Description:

Selects modulations and error correction flags

Bit

Value

Function

0

0

1

V.21 mode disabled

V.21 mode enabled

1

0

1

TCM mode enabled

TCM mode disabled

2

0

1

V.32 mode enabled

V.32 mode disabled

3

0

1

2100Hz answer tone enabled

2100Hz answer tone disabled

4

0

1

V.23 fallback disabled

V.23 fallback enabled

5

0

1

V32bis mode enabled

V32bis mode disabled

6

0

Not used

7

0

1

Software compatibility mode disabled

Software compatibility mode enabled

BIT-MAPPED REGISTER S32

Format:

AT [cmds] S32= n [cmds]

Range:

0-255

Description:

Select modulations and call control flags

Bit

Value

Function

0

0

1

V.8 call indicate disabled

V.8 call indicate enabled

1

0

1

V.8 mode disabled

V.8 mode enabled

2

0

Reserved

3

0

1

V.34 modulation enabled

V.34 modulation disabled

4

0

1

V.34+ modulation enabled

V.34+ modulation disabled

5

0

1

X2 modulation enabled

X2 modulation disabled

6

0

Reserved

7

0

Reserved

BIT-MAPPED REGISTER S33

Format:

AT [cmds] S33= n [cmds]

Range:

0-255

Description:

Enables/disables symbol rates

Bit

Value

Function

0

0

1

2400 symbol rate enabled

2400 symbol rate disabled

1

0

1

2743 symbol rate enabled

2743 symbol rate disabled

2

0

1

2800 symbol rate enabled

2800 symbol rate disabled

3

0

1

3000 symbol rate enabled

3000 symbol rate disabled

4

0

1

3200 symbol rate enabled

3200 symbol rate disabled

5

0

1

3429 symbol rate enabled

3429 symbol rate disabled

6

0

Reserved

7

0

1

Shaping enabled

Shaping disabled

BIT-MAPPED REGISTER S34

Format:

AT [cmds] S34= n [cmds]

Range:

0-255

Description:

Controls trellis coding options

Bit

Value

Function

0

0

1

8S-2D trellis encoding enabled

8S-2D trellis encoding disabled

1

0

1

16S-4D trellis encoding enabled

16S-4D trellis encoding disabled

2

0

1

32S-2D trellis encoding enabled

32S-2D trellis encoding disabled

3

0

1

64S-4D trellis encoding enabled

64S-4D trellis encoding disabled

4

0

1

Non-linear coding enabled

Non-linear coding disabled

5

0

1

TX level deviation enabled

TX level deviation disabled

6

0

1

Pre-emphasis enabled

Pre-emphasis disabled

7

0

1

Pre-coding enabled

Pre-coding disabled

BIT-MAPPED REGISTER S41

Format:

AT [cmds] S41= n [cmds]

Range:

Unidentified

Description:

Enables/disables destinctive ring

Bit

Value

Function

0

0

1

Distinctive ring disabled

Distinctive ring enabled

7 - 1

0

Reserved

BREAK SEND

Type:

Configuration

Format:

AT [cmds] S21= n [cmds]

Range:

Unidentified

Unit:

.01 second

Description:

Sends break to modem

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S23= n [cmds]

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XOFF

FLOW CONTROL CHARACTER - XON

Type:

Register

Format:

AT [cmds] S22= n [cmds]

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XON

INACTIVITY TIMER

Type:

Register

Format

AT [cmds] S19= n [cmds]

Range:

0-255

Unit:

1 minute

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.

Note: S19=0 disables the timer and allows indefinite inactivity.

TEST MODES

Type:

Register

Format:

AT [cmds] S16= n [cmds]

Range:

0-125

Unit:

Bit-mapped

Description:

Controls loopback tests, analog, digital, remote digital, and self tests.

Bit

Value

Function

0

0

Not used

1

0

1

Dial test not in progress

Dial test in progress

2 - 7

0

Not Used

V.21 ANSWER MODE FALLBACK TIMER

Type:

Register

Format

AT [cmds] S29= n [cmds]

Range:

Unidentified

Unit:

Unidentified

Description:

Sets the amount of inacivity allowed in V.21 answer mode prior to initiating fallback

V.32 HANDSHAKE TIMER

Type:

Register

Format

AT [cmds] S28= n [cmds]

Range:

Unidentified

Unit:

.1 second

Description:

Sets the V.32 handshake time