Nokia 6090 - CGMM Request ME Model Identification; CGMR Request ME Revision Identification; CGSN Request ME Serial Number Identification; CHLD Call Related Supplementary Services

Nokia 6090 AT Command Set 19
+CGMM Request ME Model Identification
This command displays the ME model identification. TA and ME are in the same
physical entity, the response of the command +GMM is identical. (GSM 07.07)
Syntax:
AT+CGMM
Display model identification.
Response is Nokia 6090 - GSM900 Fixed
Mobile Phone
AT+CGMM=?
OK
+CGMR Request ME Revision Identification
This command displays the ME revision identification. Response is the Nokia 6090
SW version, HW version is not supported. TA and ME are in the same physical entity,
the response of the command +GMR is identical. (GSM 07.07)
Syntax:
AT+CGMR
Display revision identification.
AT+CGMR=?
OK
+CGSN Request ME Serial Number Identification
This command displays the ME serial number, or the IMEI. TA and ME are in the
same physical entity, the response of the command +GSN is identical. (GSM 07.07.)
Syntax:
AT+CGSN
Display serial number.
AT+CGSN=?
OK
+CHLD Call Related Supplementary Services
Controls call hold, multiparty and explicit call transfer supplementary service
operations similarly as defined in GSM 02.30 (GSM 07.07)
Syntax:
AT+CHLD=[<n>]
AT+CHLD=?
Show supported values.
Response is +CHLD: (list of supported
<n>'s).
<n> values:
0
release waiting call or held calls;
1
release active calls and accept other
(waiting or held) call;
1x
release active call x;
2
active calls on hold and accept other
(waiting or held) call;
2x
active multiparty call on hold except call x;
3
add held call to multiparty call;
4
connect held and active (or MO alerting)
call with each other (locally both calls are
disconnected).