atcomsystems.ca/forum Forums TDM Business Telephone Systems Avaya - Lucent Telephones & Systems PRI B channels not working

When it rains it pours. A customer with a PRI is having problems making and receiving calls. They call out and get dead air. When receiving a call, the info shows up in the caller ID, but they hear nothing, and the calling party hears no ring. it is not channel specific, as one call coming in on the 3 channel won't connect, but a subsequent call from the same number to the same number on the same channel will connect.