Originally Posted by teleco
Having a problem, intermittent , with off site VoIP phones at different locations. Using SIP trunks, inbound call rings, go off hook and call is not there, receive a error tone. No problem at the host location. Any setting I can check in programming or a possible router issue at the switch side? Thanks
change 15-05-47 & 48 for remote phones. Default should be 180. Try 90 if not 60. This worked for me.