Phone line unavailable
We have a Synapse system, 2 gateways, 14 desksets. When calling to outside line, the deskset says "phone line unavailable" when the lines are not in use. Also same error when forwarding a call to another extension. A reset on the deskset will make the error go a way, but after a little while, it'll show up again. SB67035. Replaced deskset with a new one, same issue. Also happens on 67025 desksets, 67080 expansion modules. No setting found on gateway for delays, etc. Resetting the desk units temporarily fixes it, but shouldn't have to keep doing that. We had the gateways replaced but they are still doing it.