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# LINKSYS
PCMCIA LAN MODEM CARD
Card Type Fax, Modem (synchronous/asynchronous),
Network Interface Card
Chip Set AT&T
I/O Options Ethernet 10BaseT connector,
NIC Type Ethernet
Network Transfer Rate 10Mbps
Maximum Modem Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus PCMCIA Type II
Fax Class Class I
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.23, V.34
Fax Modulation V.17
Protocol
Error MNP4-5, V.42, V.42bis
Correction/Compression
Topology Star
Wiring Type Unshielded twisted pair
Boot ROM Not available
V2109
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 V.21 at 300 |
|--------------+---------------------------------------------|
| B1 | Bell 212A at 1200bps or Bell 103 at 300 |
|--------------+---------------------------------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMMUNICATIONS MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects communications mode |
|--------------+---------------------------------------------|
| Command | Mode |
|--------------+---------------------------------------------|
| &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, manual dial with |
| | talk/data switching |
|--------------+---------------------------------------------|
| &M4 | Hayes Auto -Synchronous mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION PROFILES |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Vn [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays active, stored configuration |
| | profiles, and stored telephone numbers |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &V0 | Displays for profile 0 |
|--------------+---------------------------------------------|
| &V1 | Displays for profile 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S62=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the DTE rate |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S62=0 | 300bps |
|--------------+---------------------------------------------|
| S62=1 | 600bps |
|--------------+---------------------------------------------|
| S62=2 | 1200bps |
|--------------+---------------------------------------------|
| S62=3 | 2400bps |
|--------------+---------------------------------------------|
| S62=4 | 4800bps |
|--------------+---------------------------------------------|
| S62=5 | 7200bps |
|--------------+---------------------------------------------|
| S62=6 | 9600bps |
|--------------+---------------------------------------------|
| S62=7 | 12.0Kbps |
|--------------+---------------------------------------------|
| S62=8 | 14.4Kbps |
|--------------+---------------------------------------------|
| S62=9 | 16.8Kbps |
|--------------+---------------------------------------------|
| S62=10 | 19.2Kbps |
|--------------+---------------------------------------------|
| S62=11 | 21.6Kbps |
|--------------+---------------------------------------------|
| S62=12 | 24.0Kbps |
|--------------+---------------------------------------------|
| S62=13 | 26.4Kbps |
|--------------+---------------------------------------------|
| S62=14 | 28.8Kbps |
|--------------+---------------------------------------------|
| S62=15 | 38.4Kbps |
|--------------+---------------------------------------------|
| í S62=16 | 57.6Kbps |
|--------------+---------------------------------------------|
| S62=17 | 115.2Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| Dte data transfer speed |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S72=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the DTE rate during data transfer |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í S72=0 | Last speed in autobaud |
|--------------+---------------------------------------------|
| S72=1 | 300bps |
|--------------+---------------------------------------------|
| S72=2 | 600bps |
|--------------+---------------------------------------------|
| S72=3 | 1200bps |
|--------------+---------------------------------------------|
| S72=4 | 2400bps |
|--------------+---------------------------------------------|
| S72=5 | 4800bps |
|--------------+---------------------------------------------|
| S72=6 | 7200bps |
|--------------+---------------------------------------------|
| S72=7 | 9600bps |
|--------------+---------------------------------------------|
| S72=8 | 12.0Kbps |
|--------------+---------------------------------------------|
| S72=9 | 14.4Kbps |
|--------------+---------------------------------------------|
| S72=10 | 16.8Kbps |
|--------------+---------------------------------------------|
| S72=11 | 19.2Kbps |
|--------------+---------------------------------------------|
| S72=12 | 21.6Kbps |
|--------------+---------------------------------------------|
| S72=13 | 24.0Kbps |
|--------------+---------------------------------------------|
| S72=14 | 26.4Kbps |
|--------------+---------------------------------------------|
| S72=15 | 28.8Kbps |
|--------------+---------------------------------------------|
| S72=16 | 38.4Kbps |
|--------------+---------------------------------------------|
| S72=17 | 57.6Kbps |
|--------------+---------------------------------------------|
| S72=18 | 115.2Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables flow control options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Flow control disabled |
|--------------+---------------------------------------------|
| &K1 | Reserved |
|--------------+---------------------------------------------|
| &K2 | Reserved |
|--------------+---------------------------------------------|
| &K3 | RTS/CTS flow control enabled |
|--------------+---------------------------------------------|
| &K4 | XON/XOFF flow control enabled |
|--------------+---------------------------------------------|
| &K5 | Error |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S30=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minutes |
|--------------+---------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the time the modem waits before modem |
| | chip set disconnects if there is no data |
| | activity |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NO CARRIER TIME-OUT |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S7=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 60 |
|--------------+---------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 - AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain function if poor line |
| | quality is detected |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &B0 | Auto-retrain disabled modem hangs-up |
|--------------+---------------------------------------------|
| &B1 | Auto-retrain enabled if line quality is |
| | poor, hangs up if condition lasts more than |
| | the value of register S7 |
|--------------+---------------------------------------------|
| &B2 | No retrain, no hang-up |