
12
Allied Data Technologies
This option indicates who is calling before answering.An extra
subscription will have to be paid for this option to the relevant telephone
company. The number is displayed between the first and second 'RING'
(see example). The command is as follows:
AT#CID=n
0 - Switch Caller Line Identification off. (default)
1 - Switch Caller Line Identification on with standard format.
2 - Switch Caller Line Identification on without standard format.
Example 1:
AT#CID=1
; select with standard format
OK
RING
NMBR = 0724749361
; incoming call
RING
; number calling is 072-4749361
Example 2:
This example shows the non-standard format of CLI. The string between
the first and second RING is displayed in ASCII hexadecimal code.
Opening and closing characters are added. The opening character is a 'D'
(hex 44), the closing character is a 'C' (hex 43).
AT#CID=2
; select non-standard format
OK
RING
443035333934363238303743
; incoming call
; number calling is 053-9462807
ATD
Dialling
This puts the modem on line and dials the number following the ATD
command.
If you do not specify a telephone number, the modem will be put on line
and will try to establish a connection in originate mode.
The modem waits for the time specified in register S7 (default 60
seconds) for a carrier to establish the connection. If the connection has
not been fully established within that time, the modem goes off line (hangs
up) and you will see the error message "NO CARRIER".