The maintenance of voice circuits in ISUP in ss7boost is being overhauled. Currently, call processing and circuit maintenance initiate circuit resets and blocks directly without any coordination. As hardware blocking design evolved it became apparent that circuit maintenance needed centralized management. The central maintenance manager (CMM) controls the resetting and blocking of all ISUP voice circuits - 496 maximum presently - per node. Each circuit has a maintenance action request queue. The CMM is dormant until queues are loaded and a trigger is pulled. The CMM checks all queues processing N circuits every M seconds until all queues are empty. Then the CMM returns to its dormant state.
The CMM code is written to a point that initial unit testing has begun. The number of test cases needed to verify operation looks to be high so unit testing with the ss7boost unit tester is a huge time saver.
There are a number of upgrades and configuration changes on-going so support work is spiking this week, which slows down CMM testing. This is exactly what makes predicting when large features will be ready very difficult. It's the nature of the business.
Speaking of unit testers, sangoma_mgd now has its own unit tester apparatus. A number of bugs got stomped this past December as a result of using it.
We caught and killed bugs in sangoma_mgd and ss7boost last week. In sangoma_mgd there was a case where a call ended and was not propogated to ISUP. In ss7boost we found that some sigboost messages from sangoma_mgd to ss7boost were not being properly entered in to the ISUP CDR log. Also in ss7boost we found that the "SMGRev-" prefix was not attached to inbound RDNIS strings in Asterisk/Callweaver. A new SMG release is out today that delivers the fixes - ftp://ftp.sangoma.com/linux/smg/smginstall-2008-01-21.tgz
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