Multi-Tech Systems CDMA Wireless Modem - Manual (Page 19)

Chapter 3 – Unsolicited AT Result Codes
Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C 19
Incoming Call +CRING
Description: This response indicates an incoming call. See +CRC, Cellular Result Codes, in chapter 10
for information about enabling this result.
Values: <type>
VOICE: normal voice call
DATA: all types of data calls
FAX: all types of fax calls
OTAPA: over the air parameter administration call
TEST: markov, loopback, or test call
Syntax: Response syntax: +CRING: <Type>
Example Result
+CREG: VOICE
Note: Incoming normal voice call.
RxLev Indication +CSQ
Description: This response is used to return information that has been requested by the +CCED AT
command. Refer to the +CCED AT command in chapter 14 (Cell Environment and RxLev
Indication) for command usage information.
Values: <rssi>:
0-31: Valid value ranges. Exact meaning of the value shall be manufacturer defined.
The lowest value is 0 and the highest is 31.
99: Represents signal quality unknown.
<fer>:
99: Not known or not detectable Currently always returns 99.
Syntax: Response syntax: +CSQ: <rssi>,<fer>
Example Result
+CSQ: 29, 99
Note: RSSI notification
Incoming Call +RING
Description: This response indicates an incoming call.
Syntax: Response syntax: +RING
Example Result
+RING
+RING
Note: Incoming Call