Specifications

Chapter 11 – GPRS Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 155
11.10 AT+CGQMIN Quality of Service Profile
(Minimum Acceptable)
Description: The test command returns values supported as a compound value. If the MT supports several
PDP types, the parameter value ranges for each PDP type are returned on a separate line.
The read command returns the current settings for each defined context.
This command allows the TE to specify a minimum acceptable profile which is checked by the
MT against the negotiated profile returned in the Activate PDP Context Accept message.
The set command specifies a profile for the context identified by the (local) context identification
parameter, <cid>.
A special form of the set command, AT+CGQMIN= <cid> causes the minimum acceptable profile
for context number <cid> to become undefined. In this case no check is made against the
negotiated profile.
AT&F and ATZ will undefine the minimum QoS profiles of every context which is not active or not
online.
Test Command Syntax: AT+CGQMIN=?
Response: +CGQMIN: <PDP_type>, (list of supported <precedence>s), (list of supported <delay>s),
(list of supported <reliability>s), (list of supported <peak>s), (list of supported <mean>s)
OK
ERROR
+CME ERROR
Read Command Syntax: AT+CGQMIN?
Response: [+CGQMIN : <cid>, <precedence>, <delay>, <reliability>, <peak>, <mean>]
[+CGQMIN : ...]
OK
ERROR
+CME ERROR
Write Command: AT+CGQMIN=[<cid>[, <precedence>[, <delay>[, <reliability>[, <peak>[, <mean>]]]]]]
Response: OK
ERROR
+CME ERROR
Parameter Descriptions:
<cid>
Parameter specifies a particular PDP context definition. The parameter is local to the TE-MT interface and is
used in other PDP context-related commands.
1...2
<precedence>
Precedence class
0 Network subscribed value. Default.
1 High Priority. Service commitments shall be maintained ahead of precedence classes 2 and 3
2 Normal priority. Service commitments shall be maintained ahead of precedence class 3
3 Low priority. Service commitments shall be maintained
<delay>(num)
Delay class
The delay parameter defines the end-to-end transfer delay incurred in the transmission of SDUs through the
GPRS network(s).
0 Network subscribed value. Default.
1..4 SDU size: 128 octets and
SDU size: 1024 octets:
Delay Class Mean Transfer Delay 95 percentile
1 (Predictive) <0.5 <1.5
2 (Predictive) <5 <25
3 (Predictive) <50 <250
4 (Best Effort) Unspecified
<reliability>
Reliability class
0 Network subscribed value. Default.
1 Non real-time traffic, error-sensitive application that cannot cope with data loss
2 Non real-time traffic, error-sensitive application that can cope with infrequent data loss
3 Non real-time traffic, error-sensitive application that can cope with data loss, GMM/SM, and SMS
4 Real-time traffic, error-sensitive application that can cope with data loss
5 Real-time traffic, error non-sensitive application that can cope with data loss