2 distinguish calls, 1 identify the call type, 2 set the extended incoming call indication – Rainbow Electronics GM862-QUAD-PY User Manual
Page 40: At+crc=<n><cr

GM862-QUAD / PY Software User Guide
1vv0300747 Rev. 3 - 10/07/07
Reproduction forbidden w ithout Telit Communications S.p.A. w ritten authorization - All Rights Reserved
page 40 of 96
3.2 Distinguish Calls
3.2.1 Identify the Call type
The GM862-QUAD / PY is able to identify the call type before answering it, it is so possible to have
different ring indications (unsolicited codes) depending on the call type:
Unsolicited code
Reason
RING
The extended format of incoming call indication is
disabled and a call (voice or data) is incoming.
+CRING: VOICE
The extended format of incoming call indication is
enabled and a voice call is incoming.
+CRING: ASYNC
The extended format of incoming call indication is
enabled and an asynchronous transparent data call
is incoming.
+CRING: SYNC
The extended format of incoming call indication is
enabled and a synchronous transparent data call is
incoming.
+CRING: REL ASYNC
The extended format of incoming call indication is
enabled and an asynchronous not transparent data
call is incoming.
+CRING: REL SYNC
The extended format of incoming call indication is
enabled and a synchronous not transparent data
call is incoming.
+CRING: FAX
The extended format of incoming call indication is
enabled and a fax call is incoming.
In order to use this feature you must enable the extended format of incoming calls.
3.2.2 Set the extended incoming call indication
•
Send command
AT+CRC=<n><cr>
where:
<n> is the operation mode selected:
0 – extended results Disabled (device reports RING only)
1 – extended results Enabled (device reports +CRING: <type> indication)
•
wait for
OK
response