I am currently using my UC500 system with SIP trunks provided by Paetec. I want to use Skype as second SIP provider for LD. I would like to be able to make use of both at the same time whereby calls starting with "9" match Paetec SIP dial-peers and calls starting with "6" match Skype dial-peers.
The problem is that the sip-ua section of the config has parameters to register with Paetec. Since the sip-ua section seems to be global how would I register with Skype? Better yet, if I do not have any incoming service from Skype do I need to SIP register at all? Can't I just point a dial-peer to their servers and go?