Multitech CC1600 Series, Owner'S Manual

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MT2834BLR Owner’s Manual
modem is set-up to do so with an X1, X2, X3, or X4 command.)
Table 4-3. &Q1 "Standard AT" Result Codes
TERSE VERBOSE
0 OK
1 CONNECT
2 RING
3 NO CARRIER
4 ERROR
5 CONNECT 1200
6 NO DIAL TONE
7 BUSY
8 NO ANSWER
10 CONNECT 2400
11 CONNECT 4800
12 CONNECT 9600
13 CONNECT 14400
19 CONNECT 19200
21 CONNECT 21600
24 CONNECT 24000
26 CONNECT 26400
28 CONNECT 28800
31 CONNECT 31200
33 CONNECT 33600
*Error Correction/Data Compressed modifiers are not displayed with Standard AT Result Codes.
4.3.1 AT Commands and S-Register Summary
The vast majority of installations are similar, with the MT2834BLR being used to dial up a remote
installation where the call is automatically answered. Your MT2834BLR has a default configuration to
dial another 33,600 bps modem that support error correction, data compression and flow control. If
the answering modem is not compatible, the MT2834BLR can match protocols, provided the
protocols are industry standard (i.e., ITU-T, AT&T or Bell) and not proprietary.
The &W command, used in conjunction with specific other AT commands and S-Registers, can
reconfigure the MT2834BLR to conform to a specific application. The MT2834BLR can store its
configuration parameters and S-Register values in its nonvolatile memory.
The command AT&W0 (or AT&W) causes the modem to store its current parameters in its
nonvolatile RAM. The command also sets the modem upon power up, or when it is reset with an
ATZ command, the modem reads all its configuration and S-Register parameters from RAM, and not
from the factory settings in ROM (note you may recall factory installed defaults by entering
AT&F8&W0). The &W command changes the configuration parameters stored in RAM that you
specifically intend to alter. All other default parameters remain unchanged.
The AT&W1 command sets the modem so that it does not store its parameters in RAM, and on
power up or when an ATZ command is issued, parameters are read from the factory default settings
in ROM.
Before using the &W command, you may want to view the modem's current operating parameters.
Use the ATL5, ATL6 and ATL7 commands to display the current modem configuration.