Talk for Less with SIP Trunking

What is SIP Trunking?

A SIP trunk is a service offered by an ITSP (Internet Telephony Service Provider) that permits businesses that have a PBX installed to make and received telephone calls via Voice-over-IP (VoIP) outside the enterprise network by using the same connection as the Internet connection.   By using a SIP Trunk over the local telephone lines, you can save a bundle on your call costs.

What Do I Need?

By sending telephone calls across IP instead of "normal" telephone lines you are taking advantage of a high bandwidth backbone that is already in place, all you need is an IP Telephony Gateway or an IP PBX that supports the SIP protocol and an account with us.

The drawing to the left shows, what is possibly the easiest method to enable SIP Trunking and save call costs.  By placing an IP Telephony Gateway in-between the normal PSTN and the PABX, the actual users perspective doesn't change, they still use the handsets they are used to.  The clever bit is performed by the Gateway.  By default all outbound calls are routed out over the SIP Trunk thereby creating a saving on each call made.

For the inbound calls, the Gateway can accept calls from the SIP Trunk, and the local telephone lines then pass them onto the PABX in the normal way.  The only cost to you is the gateway, the trunk account and call costs.