jrbconsult  Freshman Member

@Zyxel_Cooldia: I am the IT/PBX support for @Gary_fromDenver. I can try to answer your questions the best I can, but as we are running 4.25 currently, I cannot give you a SIP trace demonstrating the issues. We ended up turning off SIP ALG entirely and let the PBX and the phones handle their SIP traffic on sequential SIP…