DATALINK 33.6 (CIRRUS LOGIC)
| Card Type | Modem |
| Chip Set | Cirrus Logic |
| Maximum Modem Rate | 33.6Kbps |
| 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, V.34 |
| Fax Modulation Protocol | ITU-T V.17, V.21, V.27ter, V.29 |
| Error Correction/Compression | MNP5, V.42, V.42bis |
| Fax Class | Class I & II |
| Data Bus | PCMCIA Type II |
55453
SUPPORTED COMMAND SET |
Basic AT Commands |
| AT, A/ |
| A, C, E, H, L, M, O, P, Q, T, V, X, Y, Z |
| &C, &F, &G, &T, &W, &Y |
Extended AT Commands |
| \A, \C, \G, \J, \K, \O, \Q, \U, \X, \Y, \Z |
| %A |
S Registers |
| S0, S1, S3, S4, S5, S6, S8, S9, S10, S11, S12, S16, S18, S25 |
Special Commands |
| "H, "O, -J, +MS |
| 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 |
N1 |
In originate mode, handshake
begins at line speed designated by the S37 register. Modem can shift to a slower speed if
necessary. In answer mode, handshake attempted with the following protocols in order - V.22bis, V.22 or Bell 212, V.21, and Bell 103 |
AUXILIARY RELAY |
|
| Type: | Configuration |
| Format: | AT [cmds] &Jn [cmds] |
| Description: | Controls setting for auxiliary relay |
Command |
Jack Type |
&J0 |
Disable auxiliary relay |
&J1 |
Enable auxiliary relay when modem is off-hook |
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 300 or 1200bps |
B1 |
Bell 212A at 300 or 1200bps |
B2 |
ITU-T V.23 at 75/1200 |
B3 |
ITU-T V.23 at 1200/75 |
COMMUNICATIONS MODE |
|
| Type: | Configuration |
| Format: | AT [cmds] &Mn [cmds] |
| Description: | Selects communications mode - only asynchronous mode is available |
Command |
Mode |
&M0 |
Asynchronous mode |
COMMUNICATIONS MODE |
|
| Type: | Configuration |
| Format: | AT [cmds] &Qn [cmds] |
| Description: | Selects communications mode options - only asynchronous mode is available |
Command |
Mode |
&Q0 |
Asynchronous mode, serial port speed follows connect speed. |
CONFIGURATION PROFILES |
|
| Type: | Immediate |
| Format: | AT [cmds] &Vn [cmds] |
| Description: | Displays active and stored configuration profiles |
Command |
Function |
&V0 |
Reports stored profile 0 |
&V1 |
Reports stored profile 1 |
&V3 |
Reports relay and input/output status |
DATA SET READY (DSR) |
|
| Type: | Configuration |
| Format: | AT [cmds] &Sn [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] &Dn [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 |
DT |
Tone dialing enabled/Pulse dialing disabled |
ECHOPLEX VALIDITY |
|
| Type: | Configuration |
| Format: | AT [cmds] Fn [cmds] |
| Description: | Selects whether commands sent while in data mode are echoed |
Command |
Function |
F0 |
Echoplex enabled |
F1 |
Echoplex disabled |
EXTENDED RESULT CODES |
|
| Type: | Configuration |
| Format: | AT [cmds] Wn [cmds] |
| Description: | Enables selection of additional result codes. |
Command |
Function |
W0 |
Enables CONNECT result codes to report DTE speed. |
W1 |
Enables CONNECT result codes to report DTE speed. |
W2 |
Enables CONNECT result codes to report DCE speed. |
W3 |
Enables CONNECT result codes to report DTE speed, error correction and data compression |
W4 |
Enables CONNECT result codes to report DTE speed, protocol and data compression |
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 |
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 modem model and speed |
I1 |
Reports ROM checksum |
I2 |
Tests and reports ROM checksum |
I3 |
Reports chipset name |
I6 |
Reports data connection information |
I7 |
Reports manufacturer and model information |
I8 |
Reports firmware features |
I10 |
Reports configuration of modem in bit format |
I11 |
Reports configuration of modem in bit format |
I14 |
Reports SAFE device |
I20 |
Reports Cirrus Logic silicon version |
I21 |
Reports Cirrus Logic firmware version |
I22 |
Reports Cirrus Logic manufacturer name |
I23 |
Reports Cirrus Logic product model |
STORE TELEPHONE NUMBER |
|
| Type: | Configuration |
| Format: | AT [cmds] &Zn=(phone # & modifiers) |
| Description: | Writes selected telephone numbers into the non-volatile memory at location n |
| Note: The characters described in the D command are valid for use in the &Z command; telephone numbers and modifiers can include up to 30 characters. | |
Extended AT Commands
AUTO-FALLBACK/FALL-FORWARD |
|
| Type: | Configuration |
| Format: | AT [cmds] %Gn [cmds] |
| Description: | Selects auto-fallback/fall-forward |
Command |
Function |
%G0 |
Auto-fallback/fall-forward disabled |
%G1 |
Auto-fallback/fall-forward enabled |
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 |
BREAK SEND |
|
| Type: | Configuration |
| Format: | AT [cmds] \Bn [cmds] |
| Range: | 0-9 |
| Unit: | .1 second |
| Description: | Sends break to modem |
COMPRESSION |
|
| Type: | Configuration |
| Format: | AT [cmds] %Cn [cmds] |
| Description: | Selects data compression |
Command |
Function |
%C0 |
Data compression disabled |
%C1 |
MNP5 enabled |
CONNECT MODE |
|
| Type: | Configuration |
| Format: | AT [cmds] \Nn [cmds] |
| Description: | Controls the type of connection the modem will operate in |
Command |
Function |
\N0 |
Normal mode enabled |
\N1 |
Normal mode enabled |
\N2 |
Reliable mode enabled |
\N3 |
Auto-reliable mode enabled |
\N4 |
V.42 reliable mode enabled |
INACTIVITY TIMER |
|
| Type: | Configuration |
| Format: | AT [cmds] \Tn [cmds] |
| Range: | 0-90 |
| Unit: | 1 minute |
| Description: | Sets the length of time that the modem does not receive information before it disconnects. |
Special AT Commands
CALLING TONE |
|
| Type: | Configuration |
| Format: | AT [cmds] -Cn [cmds] |
| Description: | Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating |
Command |
Function |
-C0 |
Disable calling tone |
-C1 |
Enable calling tone at 1300Hz |
-C2 |
Enable V.8 calling tone and calling tone at 1300Hz |
REPORT INFORMATION |
|
| Type: | Immediate |
| Format: | AT [cmds] +GMI? [cmds] |
| Description: | Displays modem manufacturer |
REPORT INFORMATION |
|
| Type: | Immediate |
| Format: | AT [cmds] +GMM? [cmds] |
| Description: | Displays product model |
REPORT INFORMATION |
|
| Type: | Immediate |
| Format: | AT [cmds] +GMR? [cmds] |
| Description: | Displays product version |
TRELLIS CODING |
|
| Type: | Configuration |
| Format: | AT [cmds] &Un [cmds] |
| Description: | Enables/disables trellis coding |
Command |
Function |
&U0 |
Trellis coding enabled; QAM fallback |
&U1 |
Trellis coding disabled; QAM fallback only |
Voice AT commands
AUTOMATIC HANG-UP CONTROL |
|
| Type: | Configuration |
| Format: | AT [cmds] +VNH=n [cmds] |
| Range: | 0-2 |
| Default: | 0 |
| Description: | No other information available |
BEEP TONE DURATION TIMER |
|
| Type: | Configuration |
| Format: | AT [cmds] +VTD=n [cmds] |
| Range: | 5-255 |
| Default: | 100 |
| Description: | No other information available |
BUFFER THRESHOLD SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VBT=n [cmds] |
| Range: | 192, 320 |
| Default: | 192, 320 |
| Description: | No other information available |
CALLER ID SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VCID=n [cmds] |
| Range: | 0-2 |
| Default: | 0 |
| Description: | No other information available |
COMPRESSION METHOD SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VSM=n [cmds] |
| Range: | Range depends on the capability to receive |
| Default: | 140, 8000, 0 |
| Description: | No other information available |
DISTINCTIVE RING SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VDR=n [cmds] |
| Range: | 0-255, 0-255 |
| Default: | 0,0 |
| Description: | No other information available |
DTE/DCE INACTIVITY TIMER |
|
| Type: | Configuration |
| Format: | AT [cmds] +VIT=n [cmds] |
| Range: | 0-255 |
| Default: | 0 |
| Description: | No other information available |
DTMF AND TONE GENERATION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VTS=n [cmds] |
| Range: | Range depends on the capability to receive |
| Description: | No other information available |
EVENT REPORTING AND MASKING |
|
| Type: | Configuration |
| Format: | AT [cmds] +VEM=n [cmds] |
| Default: | "C", BB860980, BFE63883, BB863EE0 |
| Description: | No other information available |
FLOW CONTROL SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +FLO=n [cmds] |
| Range: | 0-2 |
| Default: | 1 |
| Description: | No other information available |
INITIALIZE PARAMETER |
|
| Type: | Configuration |
| Format: | AT [cmds] +VIP [cmds] |
| Description: | No other information available |
PLAY MODE |
|
| Type: | Configuration |
| Format: | AT [cmds] +VTX [cmds] |
| Description: | No other information available |
RECEIVE GAIN SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VGR=n [cmds] |
| Range: | 121-131 |
| Default: | 128 |
| Description: | No other information available |
RECORD MODE |
|
| Type: | Configuration |
| Format: | AT [cmds] +VRX [cmds] |
| Description: | No other information available |
RELAY/SPEAKER CONTROL |
|
| Type: | Configuration |
| Format: | AT [cmds] +VLS=n [cmds] |
| Range: | 0-16 |
| Default: | 0 |
| Description: | No other information available |
RINGBACK-GOES-AWAY TIMER |
|
| Type: | Configuration |
| Format: | AT [cmds] +VRA=n [cmds] |
| Range: | 0-50 |
| Default: | 50 |
| Description: | No other information available |
RINGBACK-NEVER-APPEARS TIMER |
|
| Type: | Configuration |
| Format: | AT [cmds] +VRN=n [cmds] |
| Range: | 0-255 |
| Default: | 10 |
| Description: | No other information available |
SILENCE DETECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VSD=n [cmds] |
| Range: | Range depends on the capability to receive |
| Default: | 128, 50 |
| Description: | No other information available |
SPEAKERPHONE MICROPHONE GAIN |
|
| Type: | Configuration |
| Format: | AT [cmds] +VGM=n [cmds] |
| Range: | 121-131 |
| Default: | 128 |
| Description: | No other information available |
SPEAKERPHONE ON/OFF CONTROL |
|
| Type: | Configuration |
| Format: | AT [cmds] +VSP=n [cmds] |
| Range: | 0, 1 |
| Default: | 0 |
| Description: | Controls speakerphone |
SPEAKERPHONE SPEAKER GAIN |
|
| Type: | Configuration |
| Format: | AT [cmds] +VGS=n [cmds] |
| Range: | 121-131 |
| Default: | 128 |
| Description: | No other information available |
SPEAKERPHONE TYPE SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VSPS=n [cmds] |
| Range: | 0, 1 |
| Description: | No other information available |
VOICE COMMAND MODE SILENCE DETECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] #VCSD=n [cmds] |
| Range: | 0, 1 |
| Default: | 0 |
| Description: | No other information available |
VOICE MODE SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +FCLASS=n [cmds] |
| Range: | 0, 1, 8, 80 |
| Default: | 8 |
| Description: | No other information available |
VOLUME SELECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] +VGT=n [cmds] |
| Range: | 121-131 |
| Default: | 128 |
| Description: | No other information available |
S(status) -REGISTERS
BIT-MAPPED REGISTER S14 |
|
| Format: | AT [cmds] S14=n [cmds] |
| Range: | Unidentified |
| Unit: | Bit-mapped |
| Description: | No other information is available |
BIT-MAPPED REGISTER S21 |
|
| Format | AT [cmds] S21=n [cmds] |
| Range: | Unidentified |
| Unit: | Bit-mapped |
| Description: | No other information is available |
BIT-MAPPED REGISTER S22 |
|
| Format | AT [cmds] S22=n [cmds] |
| Range: | Unidentified |
| Unit: | Bit-mapped |
| Description: | No other information is available |
BIT-MAPPED REGISTER S23 |
|
| Format | AT [cmds] S23=n [cmds] |
| Range: | Unidentified |
| Unit: | Bit-mapped |
| Description: | No other information is available |
BIT-MAPPED REGISTER S27 |
|
| Format | AT [cmds] S27=n [cmds] |
| Range: | Unidentified |
| Unit: | Bit-mapped |
| Description: | No other information is available |
BIT-MAPPED REGISTER S31 |
||
| Format: | AT [cmds] S31=n [cmds] | |
| Range: | Unidentified | |
| Unit: | Bit-mapped | |
| Description: | No other information is available | |
DCE LINE SPEED |
|
| Type: | Register |
| Format | AT [cmds] S37=n [cmds] |
| Range: | 0-19 |
| Unit: | ASCII |
| Description: | Sets the maximum allowable data exchange rate attempted during handshake process. |
| Note: No other information available | |
ESCAPE CHARACTER |
|
| Type: | Register |
| Format | AT [cmds] S2=n [cmds] |
| Range: | 0-127 |
| Unit: | ASCII |
| Description: | Selects a character used for the escape sequence |
| Note: A value greater than 127 will disable the escape sequence. | |
INACTIVITY TIMER |
|
| Type: | Register |
| Format | AT [cmds] S30=n [cmds] |
| Range: | 0-255 |
| Unit: | 10 seconds |
| Description: | Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process. |
| Note: S30=0 disables the timer and allows indefinite inactivity. | |
NO CARRIER TIME-OUT |
|
| Type: | Register |
| Format | AT [cmds] S7=n [cmds] |
| Range: | 1-255 |
| Unit: | 1 second |
| Description: | Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls. |
| Note: W dial modifier also uses S7 to set the maximum time to wait. | |
SLEEP MODE TIMER |
|
| Type: | Register |
| Format: | AT [cmds] S33=n [cmds] |
| Range: | 0-90 |
| Unit: | 1 second |
| Description: | Sets the length of time modem remains in sleep mode |