Apologies to start, as my technical expertise with these system is very limited. I was given some of these 5634 Handsets to configure. Internally, I was able to get them setup without issue. Where I am having a problem is setting them up an an external network. I am configuring it with an External Network for testing (Network A in PDM) and am able to get a connection. But on the handset I just get "No Access". Attaching some photos as to where I am so far.
1. WinPDM SIP settings
2.User and Settings Page detail
3. MGB, SIP, MiNET, Telework pages