COMSPHERE 3900 Series Modems
14-4 September 1998 3910-A2-GN32-40
Table 14-1
(2 of 2)
Result Codes
Numbers
(1) DescriptionWord
Numbers
(2)
28 28 CONNECT 38400** Connection at 38,400 bps
29 14 CONNECT 19200/ EC** Connection at 19,200 bps with error control
30 30 CONNECT 57600** Connection at 57,600 bps
77 77 FORBIDDEN Forbidden number
78 78 DELAYED Delayed number
* Only appears when the Extended Result Codes configuration option is enabled.
** Only appears when the Extended Result Codes configuration option is set for Use_DTE_Rate. This
displays the DTE data rate instead of the line rate.
*** Only appears when the Extended Result Codes configuration option is set for Add/EC. If this
configuration option is set for Add/V42, MNP, then either V42b, V42, MNP5, MNP4, MNP3, MNP2, or
NoEC appears.
AT Command List
AT commands are issued from an asynchronous DTE, such as a PC, and control the modem’s
operation and software configuration. AT commands are only applicable when the DTE Dialer
Type configuration option is set for AT . (Refer to the &Mn and &Qn commands.)
Table 14-2 lists all AT commands supported by the 391x Series modem. The first column lists the
AT command. The second column defines and lists all possible values for that command. The
Async Dial factory default is listed in bold. The third column lists the key sequence used to enter
the equivalent DCP command. Use this to reference commands in Chapters 4 through 12 if further
description is necessary.

AT Command Format

AT commands are entered in Command mode using the following format:
TYPE: ATXn
Where: X is the AT command and n is the specific value for that command.
PRESS: Enter
In Table 14-2, the value for X is listed in the AT Command column and the value for n is listed in
the Description column.