atcomsystems.ca/forum Forums TDM Business Telephone Systems Avaya - Lucent Telephones & Systems Partner R7 - Drop Calls in progress & another caller is on the Line

It really can't be your equip. causing this.

I would probably start by hooking a logger up to the SMDR port and have the customer log when it happens, what line, the number the inbound person was dialing ect. Then pool your facts together and have a vendor meet at the location in question.