Sangoma A101D Intermittent Call Drop-Outs on Asterisk

This is a pretty dull post, but it’s for reference. Over the past couple of months, I have been experiencing problems with a Sangoma A101D card on a BT PRI ISDN-30 line.  I’d been receiving OOF, AIS and RAI alarms from our provider which were recorded in the Wanrouter messages file.  According to Sangoma, earlier versions of …

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