Ipkall
IPKall is a public switched telephone network to voice over IP call forwarding service. Users may register with the service to obtain a phone number chosen from several Washington State LATAprefixes and have all calls to that number forwarded to their Session Initiation Protocol or Inter-Asterisk eXchangeuniform resource identifier, including anAsterisk server. The telephone companythat provides IPKall numbers isInternational Telcom.
IPKall's popularity stems from the fact that it is probably the only remaining, widely accessible VoIP service offering free-of-charge PSTN numbers.
Business model
The IPKall business model appears to be based on its ability to charge termination rates for calls reaching its subscribers, estimated at about $.01/min,[1] as the service is free for end users. Direct customer support is not provided.
