Specifications

AT command set for XX Siemens mobile phones and modems
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Document No.: A30880-A10-A001-XX-
D376
Revision: Master R75
Revision Date: 29. September.2004
131
• the reliability class
• the peak throughput class
• the mean throughput class
and is subdivided into "requested QoS" and "minimum acceptable QoS".
All parameters of the QoS are initiated by default to the "network subscribed value (= 0)", but the QoS itself is
set to undefined. Use the AT+CGQREQ or AT+CGQMIN command to define a QoS.
e.g.:
AT+CGQREQ=1,2
OK // overwrites the precedence class of QoS of CID 1 and sets
// the QoS of CID 1 to be present
A following read command will response
AT+CGQREQ?
+CGQREQ: 1,2,0,0,0,0
OK // all QoS values of CID 1 are set to network subscribed
// except precedence class which is set to 2
AT+CGQREQ=1
OK // set the QoS of CID 1 to not present
The commands AT+CGEQMIN and AT+CGEQREQ (Minimum and Requested 3G Quality of Service Profile)
have to used in the same manner and have the same behaviour. The 3G-QoS consists of the following parameter:
• Traffic class
• Maximum bitrate UL
• Maximum bitrate DL
• Guaranteed bitrate UL
• Guaranteed bitrate DL
• Delivery order
• Maximum SDU size
• SDU error ratio
• Residual bit error ratio
• Delivery of erroneous SDUs
• Transfer delay
• Traffic handling priority
It is possible to define a 3G-QoS in addition to an already defined QoS (older release).
AT+CGEQREQ=1,4,8640,0,63,576,2,1520,”2E1”,”5E7”,3,4000
OK // defines a 3G-QoS using all parameters
After defining a CID and its QoS it could be activated. To activate a CID use
AT+CGACT=1,2
OK // activate CID 2
If the CID is already active, the mobile immediately returns OK.
If no CID is given, all CIDs defined will be activated by means of
AT+CGACT = // NO CID and NO STATE given
OK // all defined CIDs will be activated