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# LINKSYS
PCMCIA 33.6 LANMODEM CARD
Card Type Modem (asynchronous)
Chip Set AT&T
Maximum Modem Rate 33.6Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Protocol Bell 103/212A
ITU-T V.21, V.22, V.23, V.34
Fax Modulation Protocol V.17
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class Class I
NIC Type Ethernet
Boot ROM Not available
Network Transfer Rate 10Mbps
Topology Star
Wiring Type RJ-45 Unshielded twisted pair
Data Bus PCMCIA Type II
54804
+------------------------------------------------------------+
| SUPPORTED COMMAND SET |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| AT, A/ |
|------------------------------------------------------------|
| A, E, H, M, O, P, Q, T, V, W, X, Z |
|------------------------------------------------------------|
| &C, &F, &G, &Q, &R, &T, &W, &X, &Y, &Z |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| \A, \B, \C, \G, \J, \T, \V, \X |
|------------------------------------------------------------|
| %A |
|------------------------------------------------------------|
| S Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S18, |
| S25, S26 |
|------------------------------------------------------------|
| Special Commands |
|------------------------------------------------------------|
| -J |
|------------------------------------------------------------|
| Note: See MHI Help File for full command documentation. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| 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 or ITU-T V.21 at |
| | 300bps |
|--------------+---------------------------------------------|
| B1 | Bell 212A at 1200bps or Bell 103 at 300bps |
|--------------+---------------------------------------------|
| B2 | V.23 selection, in originate mode and |
| | receive at 1200bps, transmit at 75bps; in |
| | answer mode, receive at 75bps and transmit |
| | at 1200bps. |
|--------------+---------------------------------------------|
| B3 | V.23 selection, in originate mode receive |
| | at 75bps and transmit at 1200bps; in answer |
| | mode, receive at 1200bps and transmit at |
| | 75bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
|--------------+---------------------------------------------|
| 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; | Modem returned to idle state after dialing. |
| | The semicolon can only be placed at the end |
| | of the dial command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Handshake only at the communication rate |
| | specified by S37 with fallback disabled |
|--------------+---------------------------------------------|
| N1 | Start handshake at the communication |
| | standard specified by S37. Fallback enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 - AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain function if poor line |
| | quality is detected |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &B0 | Auto-retrain disabled modem hangs-up |
|--------------+---------------------------------------------|
| &B1 | Auto-retrain enabled if line quality is |
| | poor |
|--------------+---------------------------------------------|
| &B2 | Tolerate any condition |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA TERMINAL READY (DTR) |
|------------------------------------------------------------|
| Type: | Configuration |
|---------------+--------------------------------------------|
| Format: | AT [cmds] &Dn [cmds] |
|---------------+--------------------------------------------|
| Description: | Selects modem response to DTR |
|------------------------------------------------------------|
| Note: The action each variant of &D causes depends on |
| the setting of &Q |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| í &D0 | Modem does not respond to DTR |
|---------------+--------------------------------------------|
| &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; Auto-Answer |
| | is disabled. |
|---------------+--------------------------------------------|
| &D3 | Modem is initialized after DTR goes off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables flow control options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Flow control disabled |
|--------------+---------------------------------------------|
| &K1 | Reserved |
|--------------+---------------------------------------------|
| &K2 | Reserved |
|--------------+---------------------------------------------|
| í &K3 | RTS/CTS flow control enabled |
|--------------+---------------------------------------------|
| &K4 | XON/XOFF flow control enabled |
|--------------+---------------------------------------------|
| &K5 | Error |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMMUNICATIONS MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects communications mode |
|--------------+---------------------------------------------|
| Command | Mode |
|--------------+---------------------------------------------|
| í &M0 | Asynchronous mode |
|--------------+---------------------------------------------|
| &M1 | Synchronous connect mode and asynchronous |
| | off-line command mode. |
|--------------+---------------------------------------------|
| &M2 | Synchronous connect mode and asynchronous |
| | off-line command mode and set DTR high. |
|--------------+---------------------------------------------|
| &M3 | Synchronous connect mode |
|--------------+---------------------------------------------|
| &M4 | Hayes AutoSync mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE DIALING RATIO |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects pulse dial make/break ratio |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &P0 | 39/61ms at 10pps (North America) |
|--------------+---------------------------------------------|
| &P1 | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA SET READY (DSR) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects DSR options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &S0 | DSR forced high |
|--------------+---------------------------------------------|
| í &S1 | DSR high only while modem is handshaking or |
| | connected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION PROFILES |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &V [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays active and stored configuration |
| | profiles |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &V0 | View active profile 0 |
|--------------+---------------------------------------------|
| &V1 | View active profile 1 |
+------------------------------------------------------------+
Extended AT Commands
+------------------------------------------------------------+
| DATA COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | This command controls the MNP5. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | No compression |
|--------------+---------------------------------------------|
| %C1 | MNP class 5 compression |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | This command selects the flow control |
| | method. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \Q0 | Disables flow control |
|--------------+---------------------------------------------|
| \Q1 | XON/XOFF software flow control |
|--------------+---------------------------------------------|
| \Q2 | CTS flow control to DTE |
|--------------+---------------------------------------------|
| \Q3 | RTS/CTS hardware flow control |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Direct mode enabled |
|--------------+---------------------------------------------|
| \N2 | Reliable mode enabled |
|--------------+---------------------------------------------|
| \N3 | LAPM, MNP or normal mode |
|--------------+---------------------------------------------|
| \N4 | LAPM of MNP mode |
+------------------------------------------------------------+
S(status) -REGISTERS
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S30=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| í S37=0 | Speed of last connection |
|--------------+---------------------------------------------|
| S37=3 | 300bps |
|--------------+---------------------------------------------|
| S37=5 | 1200bps |
|--------------+---------------------------------------------|
| S37=6 | 2400bps |
|--------------+---------------------------------------------|
| S37=7 | 4800bps |
|--------------+---------------------------------------------|
| S37=8 | 7200bps |
|--------------+---------------------------------------------|
| S37=9 | 9600bps |
|--------------+---------------------------------------------|
| S37=10 | 12.0Kbps |
|--------------+---------------------------------------------|
| S37=11 | 14.4Kbps |
|--------------+---------------------------------------------|
| S37=12 | 16.8Kbps |
|--------------+---------------------------------------------|
| S37=13 | 19.2Kbps |
|--------------+---------------------------------------------|
| S37=14 | 21.6Kbps |
|--------------+---------------------------------------------|
| S37=15 | 24.0Kbps |
|--------------+---------------------------------------------|
| S37=16 | 26.4Kbps |
|--------------+---------------------------------------------|
| S37=17 | 28.8Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE RATE STATUS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S62=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 16 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Displays the DTE rate status |
|--------------+---------------------------------------------|
| Value | Meaning |
|--------------+---------------------------------------------|
| 0 | 300bps |
|--------------+---------------------------------------------|
| 1 | 600bps |
|--------------+---------------------------------------------|
| 2 | 1200bps |
|--------------+---------------------------------------------|
| 3 | 2400bps |
|--------------+---------------------------------------------|
| 4 | 4800bps |
|--------------+---------------------------------------------|
| 5 | 7200bps |
|--------------+---------------------------------------------|
| 6 | 9600bps |
|--------------+---------------------------------------------|
| 7 | 12000bps |
|--------------+---------------------------------------------|
| 8 | 14400bps |
|--------------+---------------------------------------------|
| 9 | 16800bps |
|--------------+---------------------------------------------|
| 10 | 19200bps |
|--------------+---------------------------------------------|
| 11 | 21600bps |
|--------------+---------------------------------------------|
| 12 | 24000bps |
|--------------+---------------------------------------------|
| 13 | 26400bps |
|--------------+---------------------------------------------|
| 14 | 28800bps |
|--------------+---------------------------------------------|
| 15 | 38400bps |
|--------------+---------------------------------------------|
| 16 | 57600bps |
|--------------+---------------------------------------------|
| 17 | 115200bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE SPEED SELECTION |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S72n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the DTE speed during data transfer |
|--------------+---------------------------------------------|
| Value | Meaning |
|--------------+---------------------------------------------|
| S72=0 | last autobaud speed |
|--------------+---------------------------------------------|
| S72=1 | 300bps |
|--------------+---------------------------------------------|
| S72=2 | 600bps |
|--------------+---------------------------------------------|
| S72=3 | 1200bps |
|--------------+---------------------------------------------|
| S72=4 | 2400bps |
|--------------+---------------------------------------------|
| S72=5 | 4800bps |
|--------------+---------------------------------------------|
| S72=6 | 7200bps |
|--------------+---------------------------------------------|
| S72=7 | 9600bps |
|--------------+---------------------------------------------|
| S72=8 | 12000bps |
|--------------+---------------------------------------------|
| S72=9 | 14400bps |
|--------------+---------------------------------------------|
| S72=10 | 16800bps |
|--------------+---------------------------------------------|
| S72=11 | 19200bps |
|--------------+---------------------------------------------|
| S72=12 | 21600bps |
|--------------+---------------------------------------------|
| S72=13 | 24000bps |
|--------------+---------------------------------------------|
| S72=14 | 26400bps |
|--------------+---------------------------------------------|
| S72=15 | 28800bps |
|--------------+---------------------------------------------|
| S72=16 | 38400bps |
|--------------+---------------------------------------------|
| S72=17 | 57600bps |
|--------------+---------------------------------------------|
| S72=18 | 115200bps |
+------------------------------------------------------------+