Yesterday when i was able to get 1 pjsip connection working it was when we had set pjsip to utilize 5060. We had set the phone to 5060 (it already was). our phones are polycom 501's using ROM 4.1.0.0219 and are on SIP 3.1.3.0439 We have verified that the reg.1.address and reg.1.auth.userID are both the extension number We have then set the password to password11!! We have also tried the 32bit character string, and simply aa11. While making sure that it matches the extension set up the hardphone and the user link account (which is always linked to the extension number aka the user account name). We have successfully managed to call out from a sip line off of the computer using Zoiper and configuring them to use an extension created for them. The sip clients can usually pretty quick call out to anyone (which I believe means we've set up routes and trunks properly). Unfortunately we cannot call the sip extensions on the computer. I've gone ahead and installed oss extension manager and set it up. Linked the phones (which it finds really fast and easily). I've come to trust this program as it always shows RED for all ofthe phones, except twice. If it's RED icon is next to the extension then I know the phone hasn't properly registered. We have gotten 1 phone handset (polycom) to receive calls one time using PJSIP and 1 different phone to work using CHAN_SIP both times I knew to try the phone because it by chance had turned green in the oss extension manager. Both times only 1 phone had worked. and each time the perspective algorithm (chan_sip, or pjsip) was set to port 5060. I have tried enabling NAT under chan_sip, and I'm not sure if it was the original reason we were able to get chan_sip to work, because i could not get any other phones to work using that settings. and unfortunately the interface stopped interacting on the piaf so I rebooted the server, and the original chan_sip phone that was working had stopped. I tried multiple times again to get it to work, but it hasn't reconnected since. The one phone we got to work, was able to be dialed from anywhere, and dial out to anywhere and it was a polycom 501 with the same settings as above. As I said before I tried to ensure that the other phones had it's exact same settings. but none of them were able to connect. The one time we were able to get the pjsip phone to work, it was able to dial out, but not be dialed. The problem I believe is that the extensions are having a really hard time authenticating.