as you've probably seen on Gradwell's website they offer inbound and outbound products to have your calls terminated via IAX/IAX2. We havent got a formal process for offering this but the best way to ratify the process is to do it manually first. Customers using IP PBX services, overseas SIP providers, Asterisk servers and any other SIP compliant system can utilise these services. So, if this is something that you want to try, take a look at the product information and let me know and we'll take it from there! Theres also a SIP trunk product set as well if thats your preferred protocol... http://www.gradwell.net/voip/pbxtrunks/
Inbound = £3 per month outbound = FREE To accompany this i'd be willing to offer a second voip package on your account so you can manage multiple extensions/pstn numbers from Plusnet - it would though, have to be a PAYG account and you would be required to add £5 credit to your account to help cover our costs.