No Handset Function on Aastra 6739i

I just deployed freepbx in a small business office with 1 sip trunk; 1 incoming & outgoing for it… all is working well with the exception of the handset function. I am using Aastra 6739i w/firmware and it works when using the speakerphone but I can not get it to function or get any calls through the handset. Any suggestions on resolving this?

Sounds like either the handset cable is not plugged in correctly or the handset/cable is defective. I know of no config option that can cause this.

Look for mechanical failures, to include a stuck hookswitch or a bad hookswitch inside the phone. The latter is common on many popular phones, notably the “self cleaning” accuator on the Cisco 79xx series.

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