Release Bulletin NP V10.4.1R02 - Comtech EF Data
Release Bulletin NP V10.4.1R02 - Comtech EF Data
Release Bulletin NP V10.4.1R02 - Comtech EF Data
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GSM<br />
Main Application<br />
• Resolved: The problem where the SDM-9620 would not boot up properly when<br />
running 8 spans of GSM traffic, and would have an incorrect number of active<br />
TRSP channels.<br />
• Added: In a GSM application it is now possible to send SS7, HDLC and PASS-<br />
THRU traffic through the GSM processing module, which permits improved prioritization<br />
of these traffic types.<br />
Formerly all PVCR traffic had to be prioritized over GSM data traffic in order to<br />
prioritize the SS7 signaling traffic. By rerouting the SS7 traffic through GSM<br />
module (referred to as CR Bypass), the SS7 signaling can be prioritized over<br />
GSM data traffic (TCH), which in turn receives higher priority than the PVCR<br />
traffic.<br />
The following extended GSM parameters have been added to control CR Bypass:<br />
- EP GSM CRBYPASSHDLC ENABLE/DISABLE: CR bypass for HDLC.<br />
When enabled (the default value) all HDLC traffic is routed through the GSM<br />
processing module. When disabled, HDLC traffic is processed with PVCR<br />
traffic.<br />
- EP GSM CRBYPASSPASSTHRU ENABLE/DISABLE: CR bypass for<br />
PASSTHRU. When enabled (the default value) all PASSTHRU traffic is<br />
routed through the GSM processing module. When disabled, PASSTHRU<br />
traffic is processed with PVCR traffic.<br />
- EP GSM CRBYPASSSS7 ENABLE/DISABLE: CR bypass for SS7. When<br />
enabled (the default value) all SS7 traffic is routed through the GSM processing<br />
module. When disabled, SS7 traffic is processed with PVCR traffic.<br />
The order of traffic prioritization is now as follows:<br />
1. SS7 and/or HDLC and/or PASSTHRU (depending on the CR Bypass settings)<br />
2. GSM TCH<br />
3. PVCR<br />
NOTE: Traffic prioritization is performed when the driver window reopens. At that<br />
time, all traffic that was queued while the window was closed is dequeued,<br />
and then transmitted in order of priority.<br />
• Modified: The default value of the sorter timeout has been changed to 0 ms when<br />
the GSM license is activated. This change corrects a problem where packets<br />
received out of order would not be processed until the next packet arrived, which<br />
was dependent on when the PVC would receive the next packet and whether any<br />
jitter occurred. Now the GSM application processes each packet at the time it is<br />
received, and the GSM layer takes care of any out-of-sequence packets.<br />
Memotec Inc. 3-5
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