Technical data

64
Note: This command must be used in conjunction with the AT+iQ command to first
set the controller number that the tty interface is bound to
AT +MF=<data
bits><parity>,<t
op bits>
Data bits: 8,7,5. Parity: N (none), O (odd), E (even), S (space), M (mark). Stop
bits: 1, 2. The transmission rate is derived from the currently selected Rx/Tx
transmission speed (+MS command). Example: AT+MF=8,N,1 - select 8 data bits,
no parity and one stop bit.
AT +MF? Returns currently selected framing.
AT +MF=? Returns list of supported parameters.
AT +MS? Modulation Selection Query. The response to the query has the following format: AT
+MS: <mod>,<auto>,<min>,<max>,<min_rx>,<max_rx>.
AT
+MS=[<mod>][,[
<auto>][,[<min>
][,[<max>][,[<m
in_rx>][,[<max_r
x>]]]]]]
Modulation Selection Set. Modulation: B103 (300 bps), B212A (1200 bps), V21 (300
bps), V22 (1200 bps), V22B (1200 - 2400 bps), V22F (1200 bps Dialogic
®
Diva
®
Fast Setup), V22BF (1200 - 2400 bps Diva Fast Setup), V23C (Tx:75 bps/Rx:1200
bps outgoing call, Tx:1200 bps/Rx:75 bps incoming call), V23HDX, V23HDXON
(1200 bps half duplex for SMS over PSTN, off/on hook standard), V32 (4800 - 9600
bps), V32B, (4800 - 14400 bps), V34 (2400 - 33600 bps), V90 (28000 - 56000 bps
download client <- server, 28000 - 32000 bps upload client -> server), V90a
(28000 - 56000 bps upload client -> server, 28000 - 32000 bps download client <-
server). Auto: 0 - use only the specified modulation, 1 - try other modulations with
lower data rates if the specified modulation cannot be used. min: Minimum transmit
data rate. max: Maximum transmit data rate. min_rx: Minimum receive data rate.
max_rx: Maximum receive data rate. Only V90 modulation has different
transmit/receive rates. Rate = 0 means no minimum or maximum limitation. Valid
Rate Values (in bps): 75, 300, 600, 1200, 2400, 4800, 7200, 9600, 12000, 14400,
16800, 19200, 21600, 24000, 26400, 28000, 28800, 29333, 30667, 31200, 32000,
33600, 33400, 34667, 36000, 37333, 38000, 38667, 40000, 41333, 42000, 42667,
44000, 45333, 46000, 46667, 48000, 49333, 50000, 50667, 52000, 53333, 54000,
54667, 56000, 0
Notes:
[a] "AT+" commands are Dialogic
®
Diva
®
-specific commands which may be used either as part of a normal AT
command or as part of a called party number.
[b] If you use this AT command in sequence (in one line) with other AT commands, it should either be the last
command or it should be followed by a semi-colon ";". For example: the AT-command sequence AT&F14,
AT#CID=7, ATS0=1, AT+IA12 can be written as: AT&F14#CID=7S0=1+IA12 or AT&F14+IA12;#CID=7S0=1
[c] If a subaddress (SUB) needs to be entered, it must be separated from the rest of the number by a vertical
character [|] (also called the pipe symbol).
[d] If supported by used bearer protocol (for example V.110).
[e] Determines if the ASYNC/SYNC conversion module is inserted on top of OSI Layer 3 and which mode this
module assumes. See ASYNC/SYNC conversion module on page 70 for details.
[f] Commonly used values are: 1/1 - ISDN voice call 3.1 kHz, 1/2 - Analog voice call, 1/3 - ISDN voice call 7
kHz, 2/1 - Fax group 2, 2/2 - Fax group 3, 2/3 - Data over modem connection, 2/4 - BTX over modem
connection, 7/0 - 64 kbps Data, 7/170 - 56 kbps Data, 7/197 - V.110 rate adaptation. See Call parameter
(BC/LLC) selection on page 73 for details.