Does this apply only to customers using their proprietary gateway or customers on a CGNAT service with them?
I have been a Comcast customer for years, with my own equipment, and have never had issues using Polycom SIP phones on RingCentral. This is getting a little concerning for me as we are planning to roll out SIP phones direct to users at home soon. Brandon Ambrose Network Administrator On Sep 11, 2024 at 6:15 PM -0400, Matt Hoppes <mattli...@rivervalleyinternet.net>, wrote: > I have not, but we've run these phones with SIP ALG devices before > without issue. I'll have them check. > > On 9/10/24 9:17 PM, Tim Burke wrote: > > Have you tried placing the CPE in “bridged" mode? It’s been a while since > > I’ve done anything with Comcast CPE, but I remember their CPE doing SIP ALG > > when acting as a router. > > > > > On Sep 10, 2024, at 2:17 PM, Matt Hoppes > > > <mattli...@rivervalleyinternet.net> wrote: > > > > > > I have an employee who has recently switched to Xfinity cable service. > > > Ever since they switched their internet service their work phones will > > > not stay registered for more than about 3 minutes. > > > > > > These same phones have been used on many ISPs without issues. The same > > > config has been used behind multiple levels of NAT without issues. > > > > > > She was fine, until she switched to XFinity. > > > > > > Of course, XFinity support is absolutely worthless. > > > > > > Anyone from XFinity Tier 3 or such that might be able to offer assistance? > > > > > > I suspect it's something stupid with either NAT overload in the modem or > > > the modem not keeping the SIP channels open. > > > > > > I've tried playing around with registration times without any success. > > > And again, we've never had issues with these phones or this setup with > > > any other ISP. > > > > > > > >
