Tag : analog telephone adapter

Received Response: “Forbidden” In Grandstream HT-503

Posted March 16, 2017 by Vitor Mazuco & filed under Asterisk Users Comments: 0.

Tags: aar, analog telephone adapter, fxo, FXO port, FXS port, Grandstream HT-503, HT503, PABX, VoIP service

I have a problem for received calls form my Grandstream HT-503. I have a FXO connect to my PABX, and I can make a call from PABX to VOIP, but I didnt received calls to my VOIP, t..

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