Gmm - request model identification, Syntax, Typical response – Longshine LCS-8560C1 User Manual
Page 48: Gmr - request revision identification, Gcap - request complete capabilities list, Example responses

AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
Conexant
102184B
3-8
+GMM - Request Model Identification
This command causes the modem to report the modem product.
Syntax
+GMM
Typical Response
+GMM: V90
+GMR - Request Revision Identification
 This command causes the modem to report the modem version, revision level or date. 
This is the same as the I3 command. 
Syntax
+GMR
Typical Response
+GMR: P2109-V90 
OK 
+GCAP - Request Complete Capabilities List
This extended-format command causes the modem to transmit one or more lines of 
information text listing additional capabilities command +
permit the user to identify the overall capabilities of the modem. In particular, if the 
modem implements a particular modem control standard that uses Extended Syntax 
Commands, and if that modem control standard includes command(s) that indicate 
general capabilities, the +
in response to a +GCAP command. 
Syntax
+GCAP
Example Responses
+GCAP: +FCLASS, +MS, +ES, +DS,
for a data modem that supports all capabilities listed
Where: 
+FCLASS 
T.class1, +F (Class 1 Facsimile modem Control)
+MS
+M commands (Modulation Control: +MS and +MR 
commands) 
+ES
+E commands (Error Control: +ES, +EB, +ER, +EFCS, 
+ETBM) 
+DS
+D commands (Data Compression: +DS and +DR)
