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Examples: call forwarding, 1 examples: call forwarding – Siemens MC35 User Manual

Page 62

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AT Command Set

MC35_ATC_01_V03.02

Page 62 of 228

13.03.2002

integer or sum of integers each representing a of informa-
tion:
1

voice

2

data

4

fax

8

short message service

16

data circuit sync

32

data circuit async

64

dedicated packet access

128

dedicated PAD access

x

combination of some of the above classes.
For example, the default setting 7 represents the sum of
the integers 1, 2 and 4 (CF for voice, data and fax). The
value 255 covers all classes. If the parameter is
omitted, the default value 7 is used.

time to wait before call is forwarded, rounded to a multiple of 5 sec..

1...20..30 (only for =no reply)

0 not active

1 active

Reference

GSM 07.07,
GSM 02.04,
GSM 02.82

Note

• Please note that you can register, disable, enable and erase

4 and 5 as described above. However, it is not possible to query the status
of 4 and 5 with AT+CCFC. Instead, you may use the the ATD
command followed by *'# codes to check the status of these two reasons.
See Chapter 9.4 for a complete list of *# GSM codes. See also examples
below.

• The AT+CCFC command offers a broad range of call forwarding options

according to the GSM specifications. However, when you attempt to set a
call forwarding option which is not provisioned or not yet subscribed to, the
setting will not take effect regardless of the response returned. The re-
sponses in these cases vary with the network (for example “OK”, “Opera-
tion not allowed”, “Operation not supported” etc.). To make sure check the
the call forwarding status with =2.

4.6.1 Examples: Call forwarding

Please note that when you configure or query call forwarding without specifying any classes, the set-
tings will refer to classes 1, 2 and 4 only (=default). The handling of classes is equivalent to AT+CLCK
(Chapter 4.18.3).

Example 1

To register the destination number for unconditional call forwarding (CFU):
at+ccfc=0,3,"+493012345678",145

OK

Remember that call forwarding will be activated for voice, data and fax (de-
fault classes) when you register the destination number.

Example 2

To query the status of CFU without specifying :
at+ccfc=0,2

+CCFC: 1,1,"+493012345678",145