Call Control
3-38 AT Commands Reference Manual June 30, 20 08

The only +CBST parameter that needs mapping for mobile terminated calls is <speed>, as

described in the table below. The V.110 protocol is replaced by the analog protocol regardless of

the +CBST setting. All other parameters are set by the +CBST command.

Note: CSNS has read-only access to CBST data.

+MDC, Selection of Desired Message to Be Displayed Upon Connection of a Voice Call

This AT command enables you to select the desired messages to be displayed upon connection of

a voice call with a remote party. The OK and CONNECT messages are available.

Table 3-16:Mapping Table (V.34)

+CBST setting Mapped value for mobile terminated call
0autobauding
42400 bps (V.22bis)
64800 bps (V.32)
79600 bps (V.32)
14 14400 bps (V.34)
68 2400 bps (V.110 or X.31 flag stuffing)
70 4800 bps (V.110 or X.31 flag stuffing)
71 9600 bps (V.110 or X.31 flag stuffing)
75 14400 bps (V.110 or X.31 flag stuffing)
Command Type Syntax Response/Action Remarks
Set +MDC=<mode> OK
or:
ERROR
The Set command selects which of the
supported messages will be displayed
upon connection of a voice call.
<mode> Command Parameters:
0 - Display OK on voice call
connection
1 - Display CONNECT on voice call
connection
Default Values:
Power Up - As previously saved in
NVM FLEX bit
0 - Before Set command is first used
Read +MDC? ++MDC: <mode>
OK
The Read command should return the
current selection of <mode>.
Test +MDC=? +MDC: (list of
supported <mode>s)
OK
The Test command returns the possible
<mode> values.