?? Didn’t follow this. If you are implying there are nat settings in the pjsip I couldnt find them in the GUI (I have found options in base edit for the templates on my phone). I dont know anything about what happens behind the scenes but I know on chan_sip for every version of FreePBX I have used back to 13, setting the NAT under advanced to “YES FORCED” has solved my audio issue (and unreachable issue). If there is a setting under PJSIP I would appreciate indicating exactly where that may be.
Specifically, any time I have a Verizon FiOS client running a specific brand of Verizon router (they have 2, one works, one doesn’t) I am unable to use PJSIP on the default ports. This typically is only an issue for Verizon FiOS 1Gbps subscribers. To the contrary, as a Verizon wholesale provider, I have Verizon FTTi ONT’s that connect to routers I supply and have never had an issue even at the 1Gbps service (but this config doesn’t support TV).
(off topic) I have also had issues with comcast (cable modem) customers where everything works fine for months and then all of a sudden no matter what I do one of the phones will not work on that network. I install a new phone and its fine, move the old phone to any other customer (different network) and its fine. Almost like the MAC of the phone is stuck in some cache on the router. Tried everything, finally I just give up and install a new phone and recycle the old one into my inventory. Has happened several times now in the last 2 years.