Allied Data Technologies TRON SECURE 33.6, Руководство пользователя

Страница: 26 / 63

AT+MS Select Modulation
This command selects the modulation, optionally enables or disables automode, and
optionally specifies the lowest and highest connection rates using one to four sub
parameters. The command format is:
+MS= <mod> ,[automode],[min_rate],[max_rate]<CR>
All except the <mod> parameter are optional. If one of the optional parameters is
omitted, the value does not change.
The AT+MS=? command will list the possible values for all parameters, for instance:
(0,1,2,3,9,10,11,64,69),(0,1),(300-33600),(300-33600)
The AT+MS? command will list the current settings.
For example:
11,1,300,33600
(shows default values)
1. The <mod> parameter:
<mod> = A decimal number which specifies the preferred modulation
(automode enabled) or the modulation (automode disabled) to use in
originating or answering a connection. The options are:
<mod> Modulation
Possible speeds
0 V.21 300
1 V.22 1200
2 V.22bis 2400, 1200
3 V.23 1200, 75
9 V.32 9600, 4800
10 V.32bis 4800-14400
11 V.34 2400-33600 (default)
64 Bell103 300
69 Bell212 1200
The modem may also automatically switch to another modulation (auto-
mode), subject to the following constraints:
a. The modem may not be able to automatically switch from the
current modulation (specified by <mod>) to some other modulation.
For example, there is no standard way to automode from Bell 103 to
V.23.
b. The DTE may disable automode operation (see <automode> below).
c. The DTE may constrain the range of modulations available by
specifying the lowest and highest rates (see <min_rate> and
<max_rate> below).
TRON SECURE 33.6
Allied Data Technologies BV - Allways one step ahead 26