I’ve gone rather mad with VoIP configurations since I decided to move to using my own PBX for my personal and business telephony. My choice of installation was Elastix, mostly because it looks nice, but it works really well. These details will work with pretty much any other Asterisk PBX such as Trixbox though. Right, so let’s setup the SIP trunk. The details you need to set are as follows:
Maximum Channels: 2
User Context: leave blank
User Details: clear so it’s blank
Register String: USERNAME:PASSWORD@sip.voipcheap.com/USERNAME
So long as you have replaced all of the USERNAME’s and PASSWORDS with your VoipCheap ones, you should be laughing. Remember that to dial out, you will need to setup and outbound route!