User`s manual

AT Command Reference Manual
1048 3-25
Voice and Data = Blank for Data mode only.
“SVD” for AudioSpan analog simultaneous audio/voice and data.
“DSVD” for G.729A or DigiTalk digital simultaneous voice and data.
3.2.6 AT+ Commands
+MS - Select Modulation
This extended-format command selects the modulation and, optionally, enables or disables automode, specifies the lowest
and highest connection rates, selects µ-Law or A-Law codec type, and enables or disables robbed bit signaling generation
(server modem) or detection (client modem) using one to five subparameters. The command format is:
+MS= <mod> [,[<automode>][,[<min_rate>][,[<max_rate>][,[<x_law>][,[< rb_signaling>]]]]]]<CR>
Notes:
1. For 14400 bps and lower speeds, the Nn command and S37 register can alternatively be used, in which case the +MS
subparameters will modified to reflect the Nn and S37=x settings. Use of the Nn and S37=x commands is not
recommended but is provided for compatibility with existing communication software. (S37 is not updated by the +MS
command.)
2. Subparameters not entered (enter a comma only or <CR> to skip the last subparameter) remain at their current values.
Reporting Selected Options
The modem can send a string of information to the DTE consisting of selected options using the following command:
+MS?
The response is:
+MS: <mod>,<automode>,<min_rate>,<max_rate>,<x_law>,<rb_signaling>
For example,
+MS: 56,1,300,56000,0,0 [RC56 default values]
+MS: 11,1,300,33600,0,0 [RC336 default values]
+MS: 10,1,300,14400,0,0 [RC144 default values]
Reporting Supported Options
The modem can send a string of information to the DTE consisting of supported options using the following command:
+MS=?
The response is:
+MS: (list of supported <mod> values), (list of supported <automode> values),(list of supported <min_rate> values),
(list of supported <max_rate> values), (list of supported <x_law> values), (list of supported <rb_signaling> values)
For example,
+MS: (0,1,2,3,9,10,11,56, 64,69),(0,1),(300-33600),(300-56000),(0,1),(0,1) [RC56]
+MS: (0,1,2,3,9,10,11,64,69),(0,1),(300-33600),(300-33600),(0,1),(0,1) [RC336]
+MS: (0,1,2,3,9,10,64,69),(0,1),(300-14400),(300-14400),(0,1),(0,1) [RC144]