MEDIAFORTE PRODUCTS PTE., LTD.
COMMLINK 28.8 INTERAL MODEM
Card Type | Modem/Fax card |
Chip Set | Unidentified |
I/O Options | Line out (RJ-11), line in (RJ-11) |
Maximum Modem Rate | 28.8Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Modulation Protocol | Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V34 |
Fax Modulation Protocol | ITU-T V.17, V.27ter, V.29 |
Error Correction/Compression | MNP5, V.42, V.42bis |
Fax Class | Class I & II |
Data Bus | 16-bit ISA |
CONNECTIONS | ||||||
Function | Label | Function | Label | |||
Line out | CN1 | Line in | CN2 |
SUPPORTED COMMAND SET |
Basic AT Commands |
AT, ‘+++’, A/ |
A, C, E, H, L, M, O, P, Q, S, T, V, X, Y, Z |
&C, &F, &G &Q, &U &W, &Y, &Z |
Extended AT Commands |
\A, \B, \G, \L, \N |
%C, %L, %Q |
S Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30, S32, S33, S38, S91 |
Voice Commands |
#CID, #MDL?, #MFR?, #REV?, #CLS, #SPK, #TL, #VBQ?, #VBT, #VCI?, #VRA, #VRX, #VSK, #VSS |
#VTD, #VTS, #VTX |
Note: See MHI Help File for full command documentation. |
Proprietary AT Command Set
AUTO-MODE DETECTION | |
Type: | Configuration |
Format: | AT [cmds] Nn [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 |
í N1 | Auto-mode detection enabled |
COMMUNICATION PROTOCOLS | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the communication protocol for data calls |
Note: The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols. | |
Command | Protocol |
B0 | ITU-T V.22 at 1200bps |
í B1 | Bell 212A at 1200bps |
B2 | ITU-T V.23 at 1200bps |
CONFIGURATION PROFILES | |
Type: | Immediate |
Format: | AT [cmds] &V [cmds] |
Description: | Displays active and stored configuration profiles |
Command | Function |
&V0 | Display active profile |
&V1 | Display stored profiles |
&V2 | Display stored telephone numbers |
DATA SET READY (DSR) | |
Type: | Configuration |
Format: | AT [cmds] &Sn [cmds] |
Description: | Selects DSR options |
Command | Function |
&S0 | DSR forced high |
&S1 | DSR on in on-line mode, off in command mode |
DATA TERMINAL READY (DTR) | |
Type: | Configuration |
Format: | AT [cmds] &Dn [cmds] |
Description: | Selects modem response to DTR |
Command | Function |
í &D0 | DTR is ignored (assumed on) |
&D1 | Modem goes to command mode after DTR goes is off |
&D2 | Modem goes to command mode and disconnects (hangs up) after DTR goes off |
&D3 | Modem is initialized after DTR goes off |
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 |
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 silence up to the time specified in S7, is received prior to executing the rest of the dial string. |
D^ | 1300Hz calling tone enabled |
D; | Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. |
EXTENDED RESULT CODES | |
Type: | Configuration |
Format: | AT [cmds] Wn [cmds] |
Description: | Enables selection of additional result codes when S95=0; otherwise, S95 takes precedence. |
Command | Function |
W0 | Report DTE speed |
W1 | Report result code |
W2 | Report DCE speed |
FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] &Kn [cmds] |
Description: | Enables flow control options |
Command | Function |
&K0 | Flow control disabled |
&K3 | RTS/CTS flow control enabled |
&K4 | XON/XOFF flow control enabled |
&K5 | Transparent XON/XOFF flow control enabled |
&K6 | XON/XOFF and RTS/CTS flow control enabled |
PULSE DIALING RATIO | |
Type: | Configuration |
Format: | AT [cmds] &Pn [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] In [cmds] |
Description: | Displays information requested |
Command | Function |
I0 | Reports product code |
I1 | Reports hardware variation code |
I2 | Reports internal code |
I3 | Reports software revision number |
I4 | Reports product feature |
TEST MODES | |
Type: | Immediate |
Format: | AT [cmds] &Tn |
Description: | Selects test options |
Command | Function |
&T0 | End current test |
&T1 | Begin local analog loopback test |
TRELLIS CODING | |
Type: | Configuration |
Format: | AT [cmds] &Un [cmds] |
Description: | Enables/disables trellis coding |
Command | Function |
í &U0 | Trellis coding enabled |
&U1 | Trellis coding disabled |
Extended AT Command Set
AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD | |
Type: | Configuration |
Format: | AT [cmds] %En [cmds] |
Description: | Controls auto-retrain mode and fallback/fall-forward |
Command | Function |
%E0 | Auto-retrain disabled |
%E1 | Auto-retrain enabled |
%E2 | Auto-fallback/fall-forward enabled |
%E3 | Fast hang-up |
BREAK TYPE | ||||
Type: | Configuration | |||
Format: | AT [cmds] \Kn [cmds] | |||
Description: | Configures action of break signal | |||
Command | Break from DTE during NORMAL or MNP mode | Break from modem during DIRECT mode | Break from remote modem during NORMAL mode | |
\K0 | Online command mode enabled, send no break to remote modem | Send break to remote modem, online command mode enabled | Buffers cleared, break sent to DTE | |
\K1 | Break sent to remote modem and buffered cleared | Send break to remote modem, online command mode enabled | Buffers cleared, break sent to DTE | |
\K2 | Online command mode enabled, send no break to remote modem | Send break to remote modem | Break sent immediately to DTE | |
\K3 | Send break to remote modem immediately | Send break to remote modem, online command mode enabled | Break sent immediately to DTE | |
\K4 | Online command mode enabled, send no break to remote modem | Send break to remote modem | Break sent with received data to the DTE | |
\K5 | Send break with transmitted data | Send break to remote modem | Break sent with received data to the DTE |
S(status) -REGISTERS
CONNECTION FAILURE CODES | |
Type: | Register |
Format | AT [cmds] S86? [cmds] |
Description: | Reports codes which correspond to the possible causes of a connection failure |
Value | Meaning |
0 | Normal hang up |
4 | Carrier signal lost |
5 | No error-control detected for remote modem during feature negotiation |
6 | Remote modem failed to respond to feature negotiation |
9 | No common protocol found |
12 | No failure - remote modem disconnected normally |
13 | Remote modem failed to respond after 10 re-transmissions same message |
14 | Violation of negotiated protocol caused failure |
20 | Long space disconnect time limit reached |
DCE LINE SPEED | |
Type: | Register |
Format | AT [cmds] S37=n [cmds] |
Description: | Sets the maximum allowable data exchange rate attempted during handshake process. |
Command | Function |
S37=0 | Speed of last connection |
S37=3 | Connect at 300bps |
S37=4 | Connect at 1200bps |
S37=6 | Connect at 2400bps |
S37=7 | Connect at 4800bps |
S37=8 | Connect at 7200bps |
S37=9 | Connect at 9600bps |
S37=10 | Connect at 12.0Kbps |
S37=11 | Connect at 14.4Kbps |
S37=12 | Connect at 28.8Kbps |
V.34 DATA RATE | |
Type: | Register |
Format | AT [cmds] S34=n [cmds] |
Range | 0-11 |
Description: | Sets the maximum bit rate for V.34. Default is S34=11 (28.8Kbps) |
V.34 SYMBOL RATE | |
Type: | Register |
Format | AT [cmds] S35=n [cmds] |
Range | 0-5 |
Description: | Sets the minimum baud rate for V.34. Default is S35=0 (2400bps) |
AT Voice Command Set
RECORDING GAIN | ||
Type: | Immediate | |
Format: | AT [cmds] #RG=hhhh [cmds] | |
Default: | 7FFF | |
Range: | 0000 - 7FFF | |
Unit: | Unidentified (hexadecimal) | |
Description: | Sets the voice recording gain level |
SILENCE DETECTION | |
Type: | Configuration |
Format: | AT [cmds] #VSD=n [cmds] |
Description: | Enables/disables voice receive mode silence detection. |
Note: | Function not supported by modem |
VOICE DEVICE | |
Type: | Configuration |
Format: | AT [cmds] #VLS=n [cmds] |
Description: | Selects the I/O device for the DSP chip. |
Note: | This modem may not support all options listed below. The #VLS? Command will display the available options. |
Command | Function |
í #VLS=0 | Telephone line and handset used for voice I/O. |
#VLS=1 | Telephone handset used for voice I/O. |
#VLS=2 | Internal speaker only used for voice I/O. |
#VLS=3 | External microphone only used for voice I/O. |
#VLS=4 | Telephone line and handset used for voice I/O; internal speaker enabled. |
#VLS=6 | Speakerphone used for voice I/O. |
VOICE - LOCAL SERIAL PORT SPEED | |
Type: | Configuration |
Format: | AT [cmds] #BDR=n [cmds] |
Range: | 0-48 |
Unit: | 2400 baud (rate = n * 2400) |
Description: | Sets the speed of the local serial port when in voice mode. |
VOICE RING DETECT TIME | |
Type: | Configuration |
Format: | AT [cmds] #VRN=n [cmds] |
Default: | Unidentified |
Range: | 0-255 |
Unit: | 10ms |
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 SAMPLE QUALITY | |
Type: | Configuration |
Format: | AT [cmds] #VBS=n [cmds] |
Description: | Selects the number of bits per sample that the modem records. |
Note: | Modem only supports 4 bits per sample in ADPCM encoding. |
VOICE SAMPLING RATE | |
Type: | Configuration |
Format: | AT [cmds] #VSR=n [cmds] |
Description: | Sets the sampling rate used when recording voice signals. |
Note: | Modem only supports a sampling rate to 8000Hz |
VOICE SILENCE DETECTION TIME | |
Type: | Configuration |
Format: | AT [cmds] #VSP=n [cmds] |
Default: | 55 |
Range: | 0 - 255 |
Unit: | .1 second |
Description: | Sets the minimum amount of silence that the modem will detect. |