What is "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 area codes and have all calls to that number forwarded to their Session Initiation Protocol or Inter-Asterisk eXchange uniform resource identifier, including an Asterisk server.

The telephone company that provides IPKall numbers is International Telcom; they also provide a flat-rate $1/month area code 206 inbound fax service as Faxaway, a non-free voice and fax service as Kall8 (with toll-free or US local numbers) and the Kallback and KallCents discount outbound long-distance services.

IPKall's popularity stemmed from the fact that it was probably the last remaining, widely accessible US-based VoIP service offering free-of-charge PSTN numbers.