Specifications

UC864-E/G AT Commands Reference Guide
80304ST10041a Rev. 3 - 18/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 50 of 259
3.5.3.4 Modulation Control
3.5.3.4.1 Modulation Selection - +MS
+MS - Modulation Selection
AT+MS=
<carrier>
[,<automode>
[,<min_rate>
[,<max_rate>]]]
Set command has no effect is included only for backward compatibility with
landline modems.
Parameters:
<carrier> - a string which specifies the preferred modem carrier to use in
originating or answering a connection
V21
V22
V22B
V23C
V32
V34
<automode> - it enables/disables automatic modulation negotiation.
0 - disabled
1 - enabled. It has effect only if it is defined for the associated modulation.
<min_rate> - it specifies the lowest value at which the DCE may establish a
connection.
0 - unspecified
<max_rate> - it specifies the highest value at which the DCE may establish
a connection.
0 - unspecified
300..14400 - rate in bps
Note: to change modulation requested use +CBST command.
AT+MS? Read command returns the current value of <carrier>, <automode>,
<min_rate>, <max_rate> parameters.
AT+MS=? Test command returns all supported values of the <carrier>, <automode>,
<min_rate>, <max_rate> parameters.
3.5.3.4.2 Line Quality Monitor And Auto Retrain Or Fallback/Fallforward
- %E
%E - Line Quality Monitor And Auto Retrain Or Fallback/Fallforward
AT%E<n> Execution command has no effect and is included only for backward
compatibility with landline modems.