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SIM900 AT Command Manual

Parameters

<reason> 0 Unconditional

1 Mobile busy

2 No reply

3 Not reachable

4 All call forwarding

5 All conditional call forwarding

<mode> 0 Disable

1 Enable

2 Query status

3 Registration

4 Erasure

<number> string type (Phone number of forwarding address in format

specified by <type>)

<type> type of address

<subaddr> string type (subaddress of format specified by <satype>)

<satype> type of sub-address in integer

<class> 1 Voice (telephony)

2 Data (refers to all bearer services; with <mode>=2 this

may refer only to some bearer service if TA does not

support values 16, 32, 64 and 128)

4 Fax (facsimile services)

7 All classes

<time> 1..30 When "no reply" is enabled or queried, this gives the

time in seconds to wait before call is forwarded,

default value is 20.Supported only if it is multiples

of 5.

0 Not active

1 Active

Reference

GSM07.07

Note

3.2.6 AT+CCWA Call Waiting Control

AT+CCWA Call Waiting Control

Response

+CCWA: (list of supported <n>s)

Test Command

AT+CCWA=?

Parameter

See Write Command

Read Command Response

SIM900_AT Command Manual_V1.03 49 12/24/2010

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