XIRCOM, INC.
CEM-33BTMD
Card Type | Modem (asynchronous), Ethernet |
Chipset | Unidentified |
Maximum Onboard Memory | 64KB SRAM/256KB Flash RAM |
Boot ROM | Not available |
Network Transfer Rate | 10Mbps |
Topology | Star |
Wire Type | Unshielded twisted pair |
Maximum Data Rate | 33.6Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Modulation | Bell 212A ITU-T V.22, V.22bis, V.23, V.32, V.32bis, V.34 AT&T V.32terbo |
Fax Modulation | ITU-T V.17, V.27ter, V.29 |
Error Correction/Compression | MNP5, V.42, V.42bis |
Fax Class | Class I & II |
Data Bus | PCMCIA Type II |
CONNECTIONS | |||
Function | Label | Function | Label |
MAM connector to PCMCIA card | CN1 | Telephone line out | CN3 |
MAM connector to PCMCIA card | CN2 | UTP connector | CN4 |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
LED1 | Yellow | On | Card is transmitting or receiving data over the modem |
LED1 | Yellow | Off | Card is not transmitting or receiving data over the modem |
LED2 | Green | On | Carrier signal detected |
LED2 | Green | Off | Carrier signal not detected |
LED3 | Yellow | On | Card is transmitting or receiving data over Ethernet |
LED3 | Yellow | Off | Card is not transmitting or receiving data over Ethernet |
LED4 | Green | On | Network connection is good |
LED4 | Green | Off | Network connection is broken |
SUPPORTED STANDARD COMMANDS |
Basic AT Commands |
+++, A/ |
A, D, E, H, M, N, P, Q, T, V, W, X, Y, Z |
&C, &D, &F, &G, &K, &P, &S, &V, &W, &Y, &Z |
Extended AT Commands |
\A, \B, \C, \G, \K, \N, \Q, \T, \U, \V, \X, \Y, \Z |
%A, %C, %E, %G |
Special AT Commands |
-C, "H, -J, "O |
S-Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S25, S30, S46, S82, S95, S108 |
Note: See MHI help file for complete information. |
Proprietary AT Command Set
ANSWER/ORIGINATE MODE | |
Type: | Configuration |
Format: | AT [cmds] &An [cmds] |
Description: | Sets whether the modem will auto-answer as an originating or an answering modem. |
Command | Function |
í &A0 | Modem answers in answer mode. |
&A1 | Modem answers in originate mode. |
COMMUNICATIONS MODE | |
Type: | Configuration |
Format: | AT [cmds] &Qn [cmds] |
Description: | Selects communications mode options. |
Command | Mode |
í &Q5 | V.42 error correction mode. |
&Q6 | Buffered asynchronous mode. |
&Q8 | MNP error correction mode. |
&Q9 | V.42bis data compression or MNP4 error correction mode. |
CONNECTION FAILURE CODES | |
Type: | Register |
Format | AT [cmds] S86? [cmds] |
Description: | Returns a value which indicate the cause of a connection failure. |
Value | Meaning |
0 | Normal hang up. |
1 | No failure - normal hang-up after fax connection. |
4 | Carrier signal lost. |
5 | No error-control detected for remote modem during feature negotiation. |
6 | Remote modem failed to respond to feature negotiation. |
8 | No common framing technique found. |
9 | No common protocol found. |
10 | Remote modem sent erroneous feature negotiation message. |
12 | No failure - remote modem disconnected normally. |
13 | Remote modem failed to respond after the allowed number of re-transmissions of the same message. |
14 | Violation of negotiated protocol caused failure. |
15 | Negotiated compression failed. |
18 | Time limit reached according to parameters set in S30. |
19 | Remote modem failed to respond after the allowed number of re-transmissions of the same message. |
32 | Disconnect tone received from telephone network. |
33 | User aborted connection. |
34 | DTR signal was lost. |
99 | Reason for disconnection not known. |
COUNTRY CODE | |
Type: | Register |
Format: | AT [cmds] S133=n [cmds] |
Description: | Selects the country the modem is configured for. |
Note: | See the %TE command for more information. Not all options may be supported by all modems. |
Command | Function |
S133=0 | Country code set for the United States. |
S133=1 | Country code set for Great Britain. |
S133=2 | Country code set for Germany. |
S133=3 | Country code set for France. |
S133=4 | Country code set for Belgium. |
S133=5 | Country code set for the Netherlands. |
S133=6 | Country code set for Italy. |
S133=7 | Country code set for Spain. |
S133=8 | Country code set for Austria. |
S133=9 | Country code set for Switzerland. |
S133=10 | Country code set for Portugal. |
S133=11 | Country code set for Sweden. |
S133=12 | Country code set for Norway. |
S133=13 | Country code set for Denmark. |
COUNTRY CODE (CON'T) | |
Command | Function |
S133=14 | Country code set for Finland. |
S133=15 | Country code set for Cyprus. |
S133=16 | Country code set for Czechoslovakia. |
S133=17 | Country code set for Greece. |
S133=18 | Country code set for Hungary. |
S133=19 | Country code set for Poland. |
S133=20 | Country code set for Russia. |
S133=21 | Country code set for Turkey. |
S133=22 | Country code set for Luxembourg. |
S133=23 | Country code set for Iceland. |
S133=25 | Country code set for Egypt. |
S133=26 | Country code set for India. |
S133=27 | Country code set for Kenya. |
S133=28 | Country code set for South Africa. |
S133=29 | Country code set for Morocco. |
S133=48 | Country code set for Abu Dhabi. |
S133=49 | Country code set for Australia. |
S133=50 | Country code set for Bangladesh. |
S133=51 | Country code set for China. |
S133=52 | Country code set for Hong Kong. |
S133=53 | Country code set for Indonesia. |
S133=54 | Country code set for Japan. |
S133=55 | Country code set for Korea. |
S133=56 | Country code set for Malaysia. |
S133=57 | Country code set for New Zealand. |
S133=58 | Country code set for the Philippines. |
S133=59 | Country code set for Singapore. |
S133=96 | Country code set for Argentina. |
S133=97 | Country code set for Bolivia. |
S133=98 | Country code set for Brazil. |
S133=99 | Country code set for Chile. |
S133=100 | Country code set for Colombia. |
S133=101 | Country code set for Costa Rica. |
S133=102 | Country code set for Guatemala. |
S133=103 | Country code set for Mexico. |
S133=104 | Country code set for Nicaragua. |
S133=105 | Country code set for Paraguay. |
S133=106 | Country code set for Peru. |
S133=107 | Country code set for Uruguay. |
S133=108 | Country code set for Venezuela. |
S133=128 | Country code set for Kuwait. |
S133=129 | Country code set for Oman. |
S133=130 | Country code set for Saudi Arabia. |
CREDIT CARD TONE TYPE | |
Type: | Register |
Format: | AT [cmds] S121=n [cmds] |
Description: | Selects the type of credit card tone the modem will detect. |
Command | Function |
í S121=0 | Modem will detect AT&T credit card tone. |
S121=1 | Modem will detect MCI credit card tone. |
DIAL DISPLAY | |
Type: | Configuration |
Format: | AT [cmds] &En [cmds] |
Description: | Selects whether the modem will display each digit as it is being dialed. |
Command | Function |
í &E0 | Dial display disabled. |
&E1 | Dial display enabled. |
DISPLAY INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In [cmds] |
Description: | Displays information requested about the modem. |
Command | Function |
I0 | Reports product identification code. |
I1 | Reports ROM checksum. |
I2 | Tests and reports ROM checksum. |
I3 | Reports firmware revision. |
I4 | Displays feature bitmap. |
I6 | Displays connection statistics. |
DTE CONNECT SPEED RESULT CODE | |
Type: | Register |
Format: | AT [cmds] S122=n [cmds] |
Description: | Selects the DTE speed that the modem will report in CONNECT messages. |
Command | Function |
S122=0 | Modem reports CONNECT. |
S122=1 | Modem reports CONNECT 1200. |
S122=2 | Modem reports CONNECT 2400. |
S122=3 | Modem reports CONNECT 4800. |
S122=4 | Modem reports CONNECT 7200. |
S122=5 | Modem reports CONNECT 9600. |
S122=6 | Modem reports CONNECT 12000. |
S122=7 | Modem reports CONNECT 14400. |
S122=8 | Modem reports CONNECT 16800. |
S122=9 | Modem reports CONNECT 19200. |
S122=10 | Modem reports CONNECT 21600. |
DTE CONNECT SPEED RESULT CODE (CON'T) | |
Command | Function |
S122=11 | Modem reports CONNECT 24000. |
S122=12 | Modem reports CONNECT 26400. |
S122=13 | Modem reports CONNECT 28800. |
S122=14 | Modem reports CONNECT 38400. |
S122=15 | Modem reports CONNECT 57600. |
S122=16 | Modem reports CONNECT 115200. |
S122=17 | Modem reports CONNECT 230400. |
HELP | |
Type: | Immediate |
Format: | AT [cmds] $ |
Description: | Displays help screens on the modem's commands. |
HELP SCREEN BORDER | |
Type: | Register |
Format: | AT [cmds] S120=n [cmds] |
Description: | Selects whether help screens will be displayed with an IBM Extended ASCII border around them. |
Command | Function |
S120=0 | Help screens are displayed with border. |
í S120=1 | Help screens are displayed without border. |
LINE SPEED - CURRENT | |
Type: | Register (read-only) |
Format: | AT [cmds] S43? [cmds] |
Description: | Returns a value indicating the speed of the current connection. |
Value | Meaning |
1 | Speed of current connection is 1200/75bps. |
2 | Speed of current connection is 75/1200bps. |
5 | Speed of current connection is 1200bps. |
6 | Speed of current connection is 2400bps. |
7 | Speed of current connection is 4800bps. |
8 | Speed of current connection is 7200bps. |
9 | Speed of current connection is 9600bps. |
10 | Speed of current connection is 12Kbps. |
11 | Speed of current connection is 14.4Kbps. |
15 | Speed of current connection is 28.8Kbps. |
16 | Speed of current connection is 16.8Kbps. |
17 | Speed of current connection is 19.2Kbps. |
19 | Speed of current connection is 31.2Kbps. |
20 | Speed of current connection is 33.6Kbps. |
29 | Speed of current connection is 24Kbps. |
33 | Speed of current connection is 21.6Kbps. |
LINE SPEED - DESIRED | |
Type: | Register |
Format: | AT [cmds] S37=n [cmds] |
Description: | Sets the maximum allowable data exchange rate attempted during handshake process. |
Command | Function |
S37=5 | Set speed to 1200bps. |
S37=6 | Set speed to 2400bps. |
S37=7 | Set speed to 4800bps. |
S37=8 | Set speed to 7200bps. |
S37=9 | Set speed to 9600bps. |
S37=10 | Set speed to 12Kbps. |
S37=11 | Set speed to 14.4Kbps. |
S37=15 | Set speed to 28.8Kbps. |
S37=16 | Set speed to 16.8Kbps. |
S37=17 | Set speed to 19.2Kbps. |
S37=19 | Set speed to 31.2Kbps. |
S37=20 | Set speed to 33.6Kbps. |
S37=29 | Set speed to 24Kbps. |
S37=33 | Set speed to 21.6Kbps. |
ON-LINE | |
Type: | Immediate |
Format: | AT [cmds] On |
Description: | Instructs the modem to return to the on-line state. |
Command | Function |
O0 | Return to on-line state. |
O1 | Return to on-line state and initiate retrain sequence. |
O3 | Return to on-line state and initiate rate renegotiation sequence. |
PROTOCOL SELECTION | |
Type: | Register |
Format: | AT [cmds] S110=n [cmds] |
Description: | Selects which protocols the modem will use when attempting to negotiate a connection. |
Command | Function |
S110=0 | Modem will attempt to connect with V.23, V.22bis, V.22, or Bell 212A. |
S110=1 | Modem will attempt to connect with V.32, V.23, V.22bis, V.22, or Bell 212A. |
S110=2 | Modem will attempt to connect with V.32bis only. |
S110=3 | Modem will attempt to connect with V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A. |
S110=4 | Modem will attempt to connect with V.32terbo only. |
S110=5 | Modem will attempt to connect with V.32terbo, V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A. |
S110=6 | Modem will attempt to connect with 28.8Kbps V.34 only. |
S110=7 | Modem will attempt to connect with 28.8Kbps V.34, V.32terbo, V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A. |
S110=8 | Modem will attempt to connect with V.34 only. |
í S110=9 | Modem will attempt to connect with V.34, V.32terbo, V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A. |
PROTOCOL - 1200BPS | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the protocol the modem will use at 1200bps. |
Command | Function |
B0 | Modem will use ITU-T V.22 at 1200bps. |
í B1 | Modem will use Bell 212A at 1200bps. |
B2 | Modem will use ITU-T V.23 at 75/1200bps. |
B3 | Modem will use ITU-T V.23 at 1200/75bps. |
PROTOCOL - 2400BPS | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the protocol the modem will use at 2400bps. |
Command | Function |
B30 | Modem will use V.22bis at 2400bps. |
í B33 | Modem will use V.34 at 2400bps. |
PROTOCOL - 4800BPS | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the protocol the modem will use at 4800bps. |
Command | Function |
B41 | Modem will use V.32 at 4800bps. |
í B44 | Modem will use V.34 at 4800bps. |
PROTOCOL - 9600BPS | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the protocol the modem will use at 9600bps. |
Command | Function |
B52 | Modem will use V.32bis at 9600bps. |
í B53 | Modem will use V.34 at 9600bps. |
PROTOCOL - 12KBPS | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the protocol the modem will use at 12Kbps. |
Command | Function |
B70 | Modem will use V.32 at 12Kbps. |
í B72 | Modem will use V.34 at 12Kbps. |
PROTOCOL - 14.4KBPS | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the protocol the modem will use at 14.4Kbps. |
Command | Function |
B75 | Modem will use V.32bis at 14.4Kbps. |
í B77 | Modem will use V.34 at 14.4Kbps. |
S133 COMMAND | |
Type: | Configuration |
Format: | AT [cmds] %TE=n [cmds] |
Description: | Selects whether the S133 command has any function. |
Command | Function |
%TE=0 | S133 command has no function. |
%TE=1 | S133 command sets country code. |
TRELLIS CODING | ||
Type: | Configuration | |
Format: | AT [cmds] &Un [cmds] | |
Description: | Selects whether the modem will use trellis coding. | |
Command | Function | |
í &U0 | Trellis coding enabled. | |
&U1 | Trellis coding disabled. |
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. |
í &B1 | Auto-retrain enabled, modem hangs up if retrain fails. |
&B2 | Auto-retrain disabled, modem does not hang up. |
V.42bis DICTIONARY SIZE | |
Type: | Configuration |
Format: | AT [cmds] "Nn [cmds] |
Default: | 2048 |
Range: | 512 - 2048 |
Unit: | 1 byte |
Description: | Selects the size of the V.42bis dictionary. |