SILICOM MULTIMEDIA SYSTEMS, INC.

MODEM MASTER 520/V.34PLUS

Card Type Modem
Chip Set Unidentified
Maximum Modem Rate 33.6Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Protocol Bell 103/212A
ITU-T V.22bis, V.32bis, V.34, V.34+
Fax Modulation Protocol ITU-T V.17, V.21 CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class I & II
Data Bus PCMCIA


55472

SUPPORTED COMMAND SET

Basic AT Commands

AT, '+++', A/
A, B, E, H, M, O, P, Q, T, V, X, Y, Z
&C, &V, &Z

Extended AT Commands

\K, \N

S Registers

S0, S1, S2, S3, S4, S6, S7, S8, S10, S11, S12, S37
 
Note: See MHI Help File for full command documentation. Specific S-register information unavailable; S-registers may vary slightly from MHI help file.


PROPRIETARY AT COMMAND SET

AUTO-MODE DETECTION

Type: Configuration
Format: AT [cmds] N n [cmds]
Description: Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed.

Command

Function

N0

Auto-mode detection disabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake follows interface speed

N1

Auto-mode detection enabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake at highest possible speed with fallback to lower speed if necessary


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


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

DS=n

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.


FACTORY DEFAULT PROFILE

Type: Configuration
Format: AT [cmds] &F [cmds]
Description: Sets values in active profile to values found in the default profile

Command

Function

&F0

Load factory configuration

&F5

Load factory configuration for ETC mode


FLOW CONTROL

Type: Configuration
Format: AT [cmds] &K n [cmds]
Description: Enables flow control options

Command

Function

&K0

Flow control disabled

&K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control enabled


GUARD TONE

Type: Configuration
Format: AT [cmds] &G n [cmds]
Description: Commands the modem to transmit a guard tone in V.22/V.22bis

Command

Function

&G0

Guard tone disabled

&G1

Guard tone disabled

&G2

1800Hz guard tone enabled


REPORT INFORMATION

Type: Immediate
Format: AT [cmds] I n [cmds]
Description: Displays information requested

Command

Function

I0

Reports product code

I2

Reports OK

I3

Reports firmware version and application codes

I4

Reports OEM identifier string in either binary or ASCII format


RESTORE PROFILE ON POWER-UP

Type: Configuration
Format: AT [cmds] &Y n [cmds]
Description: Restores a selected profile into the active profile on power-up (hard reset)

Command

Function

&Y0

Restore profile 0 on power-up


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


STORE ACTIVE PROFILE

Type: Configuration
Format: AT [cmds] &W n [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


TEST MODES

Type: Immediate
Format: AT [cmds] &T n
Description: Selects test options

Command

Function

&T0

End current test

&T1

Begin local analog loopback test

&T3

Begin local digital loopback

&T6

Request remote digital loopback


EXTENDED AT COMMANDS

FLOW CONTROL TYPE

Type: Configuration
Format: AT [cmds] \Q n [cmds]
Description: Sets type of flow control used by modem

Command

Function

\Q0

Flow control disabled

\Q1

Bi-directional XON/XOFF flow control enabled

\Q2

CTS flow control by DCE enabled

\Q3

Bi-directional RTS/CTS flow control enabled


COMPRESSION

Type: Configuration
Format: AT [cmds] %C n [cmds]
Description: Selects data compression

Command

Function

%C0

Data compression disabled

%C1

MNP5 & V.42bis data compression enabled


S(STATUS) - REGISTERS

INACTIVITY TIMER

Type: Register
Format: AT [cmds] S89= n [cmds]
Range: 0, 5-255
Default: 10
Unit: 1 second
Description: Sets the length of time that the modem does not receive information before it disconnects; S89=0 will disable.


V.25 CALLING TONE

Type: Register
Format AT [cmds] S35= n [cmds]
Range: 0-1
Unit: Decimal
Description: Enables V.25 data calling tone, which allows remote data/fax/voice discrimination
Note: S35=0 disables V.25 data calling tone.


V.34 MODULATION

Type: Register
Format AT [cmds] S28= n [cmds]
Range: 0-255
Unit: Decimal
Description: Enables V.34 modulation
Note: S28=0 disables V.34 modulation.