I love it when our ISDN line develops a fault, as it seems to do once a year with the month chosen at random. It’s happened to day. The reason I love it of course is we also have SIP trunks coming into the office so normal service doesn’t have to be resumed – it doesn’t stop in the first place. Hooray for ISDN faults 
(hooray for SIP trunks).
I don’t have access to the numbers but it would be interesting to see the BT Openreach figures for exchange line faults. As reported last week the equipment is getting fairly mature.
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Tags: ISDN, SIP Trunks