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8.
CALL CONTROL COMMANDS
NOTE: In case that the product implements call related supplementary services
(hold/waiting/multiparty/etc.), AT interpreter must keep track of all available calls by keeping
its own call stack.
8.1 V.25TER
8.1.1 D Dial
Command
Possible verbose
result codes (V1)
execute
D<dial-
BLACKLISTED
string>
BUSY
CONNECT
CONNECT 1200
CONNECT 2400
CONNECT 4800
CONNECT 9600
CONNECT 14400
CONNECT 19200
CONNECT 28800
CONNECT 38400
CONNECT 43200
DELAYED
ERROR
NO ANSWER
NO CARRIER
OK
Mandatory. V.25ter section 6.3.1. All result codes are not in V.25ter. Before one of the above
codes is issued, the terminal may return some of the following codes : +CSSI, +COLP, +CR,
+ER, +DR, or +ILRR (in that order). In GPRS connections the data rate can actually be higher
than the value desired because it is the minimum desired value. The only verbose code
returned in the case of a GPRS call is the word CONNECT.
NOTE: +VTS command or comma modifier (e.g. "ATD,1234"; in this case the first comma
does not cause a pause) can be used to send DTMF digits.
Numeric
Description
(V0)
call to the number is forbidden until manual reset
14
called party is busy
7
data/fax call established; rate 300 bps (or X forbids rate
1
display) or GPRS context activation
data/fax call established; rate 1200 bps
5
data/fax call established; rate 2400 bps
10
data/fax call established; rate 4800 bps
11
data/fax call established; rate 9600 bps
12
HSCSD (or 14.4 tch) data/fax call established; rate 14400 bps
17
HSCSD data/fax call established; rate 19200 bps
18
HSCSD data/fax call established; rate 28800 bps
19
HSCSD data/fax call established; rate 38400 bps
20
HSCSD data/fax call established; rate 43200 bps
21
call to the number is temporarily (5 sec - 3 min) forbidden
13
command cannot be actioned
4
called party does not answer
8
call could not be established
3
command aborted or voice call started with semicolon
0
character
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