RACAL-DATACOM
RMD 3222
Card Type | Modem (synchronous/asynchronous) |
Chipset | Unidentified |
Maximum Data Rate | 14.4Kbps |
Data Modulation | Bell 103A, 208, 212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.33 |
Error Correction/Compression | MNP5, V.42, V.42bis |
Data Bus | Serial |
CONNECTIONS | |||
Function | Label | Function | Label |
PREVIOUS button | BT1 | Leased telephone line out | CN2 |
1 button | BT2 | Switched telephone line out | CN3 |
2 button | BT3 | AC power in | CN4 |
3 button | BT4 | Diagnostic connector | CN5 |
NEXT button | BT5 | Serial port | CN6 |
ENTER button | BT6 | LCD display | LCD |
Telephone line in | CN1 |
MISCELLANEOUS TECHNICAL NOTES |
There are several jumpers on this board. Their exact locations and functions are unidentified. |
SUPPORTED STANDARD COMMANDS |
Basic AT Commands |
+++, ‘comma’, A/ |
A, B, E, H, L, M, N, O, P, T, V, X, Y, Z |
&C, &D, &F, &G, &K, &M, &Q, &S, &T, &W, &Y, &Z |
Extended AT Commands |
\T, \V, \X |
S-Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26 |
V.25bis Commands |
CIC, CRN, CRS, DIC, PRN |
Note: See MHI help file for complete information. |
UNIDENTIFIED COMMANDS | |
Command | Default |
Proprietary AT Command Set
BREAK TYPE | |
Type: | Configuration |
Format: | AT [cmds] \Kn [cmds] |
Description: | Configures the modem's reaction to receiving a break signal. |
Command | Function |
\K0 | Modem ignores received break signal. |
\K1 | Buffers are cleared, break is transmitted immediately. |
\K2 | Buffers are not cleared, break is transmitted immediately. |
í \K3 | Buffers are not cleared, break is transmitted in sequence with data. |
CARRIAGE RETURN DELAY | |
Type: | Configuration |
Format: | AT [cmds] \Fn [cmds] |
Description: | Selects whether the modem will insert a delay the length of five characters after sending any character that would cause a printer or teletype's carriage to return. |
Command | Function |
\F0 | Carriage return delay enabled. |
í \F1 | Carriage return delay disabled. |
CONNECT MODE | |
Type: | Configuration |
Format: | AT [cmds] \Nn [cmds] |
Description: | Controls the type of connection the modem will make. |
Command | Function |
\N0 | Normal mode enabled. |
\N1 | Reliable mode enabled. |
\N2 | Normal mode enabled. |
í \N3 | Auto-reliable mode enabled. |
CTS AND RTS SIGNALS | |
Type: | Configuration |
Format: | AT [cmds] &Rn [cmds] |
Description: | Controls the behaviour of the CTS and RTS signals. |
Command | Function |
í &R0 | CTS follows RTS. |
&R1 | CTS follows DTR. |
&R2 | CTS normal. |
DIAL | |
Type: | Immediate |
Format: | AT [cmds] D <#>;[cmds] |
Description: | Dials the telephone number indicated according to any modifiers included in the string. |
Command | Function |
DLn | If connection is not successful, modem will dial the number stored in memory location n. |
DP | Pulse dialing enabled. |
DR | Answer mode enabled; originate mode disabled following handshake initiation. This must be the last modifier except for a semicolon. |
DS=n | Dial stored telephone number n. |
DT | Tone dialing enabled. |
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 Quiet 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. |
DISPLAY CONFIGURATION | |
Type: | Immediate |
Format: | AT [cmds] &Vn [cmds] |
Description: | Displays the indicated part of the modem's configuration. |
Command | Function |
&V0 | Displays the command settings, stored profiles, and stored telephone numbers 0 through 5. |
&V1 | Displays all stored telephone numbers. |
DISPLAY CONFIGURATION - MNP | |
Type: | Immediate |
Format: | AT [cmds] \S [cmds] |
Description: | Displays the settings of the modem's MNP-related commands. |
DISPLAY INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In [cmds] |
Description: | Displays information requested about the modem. |
Command | Function |
I0 | Displays product identification code. |
I1 | Displays ROM checksum. |
I2 | Tests and displays ROM checksum result. |
I3 | Displays firmware revision. |
ERROR CORRECTION TYPE | |
Type: | Configuration |
Format: | AT [cmds] \Pn [cmds] |
Description: | Selects which types of error correction the modem will attempt to use. |
Command | Function |
\P0 | Modem will use V.42 error correction only. |
\P1 | Modem will use MNP error correction only. |
í \P2 | Modem will use V.42 or MNP error correction. |
FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] \Qm,n [cmds] |
Description: | Selects the type or types of flow control the modem will use. |
Note: | Two types of flow control may be active at any time. There is no difference between the values of m and n. |
Command | Function |
\Q0 | Flow control disabled. |
\Q1 | CTS/RTS flow control enabled. |
\Q2 | DC1/DC2 flow control enabled. |
í \Q3 | DC1/DC3 flow control enabled. |
LOCK SERIAL PORT | |
Type: | Configuration |
Format: | AT [cmds] \Bn [cmds] |
Description: | Sets operation of serial port speed. |
Command | Function |
\B0 | Serial port speed follows connect speed. |
í \B1 | Serial port speed locked. |
MNP MODE | |
Type: | Configuration |
Format: | AT [cmds] \Cn [cmds] |
Description: | Selects which classes of MNP the modem will attempt to use. |
Command | Function |
\C1 | Modem may use MNP class 1 only. |
\C2 | Modem may use MNP class 2 or 1. |
\C3 | Modem may use MNP class 3 and below. |
\C4 | Modem may use MNP class 4 and below. |
í \C5 | Modem may use all MNP classes (5 and below). |
PROTOCOL/SPEED | |
Type: | Configuration |
Format: | AT [cmds] Fn [cmds] |
Description: | Selects the modulation protocol and line speed the modem will attempt to connect with. |
Command | Function |
í F0 | Auto-detect fastest common protocol. |
F1 | Attempt to connect with V.21 at 300bps. |
F2 | Attempt to connect with V.22 at 600bps. |
F3 | Attempt to connect with V.23 at 1200/75bps. |
F4 | Attempt to connect with V.22 at 1200bps. |
F5 | Attempt to connect with V.22bis at 2400bps. |
F6 | Attempt to connect with V.32 at 9600bps. |
F7 | Attempt to connect with V.32 at 14.4Kbps. |
RESULT CODE - DIALING | |
Type: | Configuration |
Format: | AT [cmds] \Dn [cmds] |
Description: | Selects whether the modem will display DIALING when it goes off hook to dial a telephone number. |
Command | Function |
í \D0 | DIALING result code disabled. |
\D1 | DIALING result code enabled. |
RESULT CODES | |
Type: | Configuration |
Format: | AT [cmds] Qn [cmds] |
Description: | Enables modem to send result codes to the DTE. |
Command | Function |
í Q0 | Result codes enabled. |
Q1 | Result codes disabled. |
Q2 | Result codes enabled in originate mode only. |
V.42bis MODE | |
Type: | Configuration |
Format: | AT [cmds] \Mn [cmds] |
Description: | Selects whether the modem will attempt to connect with V.42bis data compression. |
Command | Function |
í \M0 | V.42bis data compression enabled. |
\M1 | V.42bis data compression disabled. |
Proprietary V.25bis Command Set
COMMAND SET - AT | |
Type: | Immediate |
Format: | RHA |
Description: | Resets the modem to AT command mode. |
REQUEST LISTED NUMBERS | |
Type: | Immediate |
Format: | RLN |
Description: | Requests the modem to return the list of stored numbers. |