Use an IAX Trunk for your Asterisk and IP PBX calling needs.
An IAX trunk (Inter-Asterisk Exchange) is the means to interconnect Asterisk-based servers. Because it uses a single port for both channel signaling and RTP (real-time protocol) streams, it has a distinct advantage over SIP trunks when internetworking with NAT and firewalls. An IAX trunk is also more bandwidth-efficient than a SIP trunk because it has much lower network overhead. If your company has an Asterisk-based PBX for local or national calls - or if you are a small Asterisk-based VoIP service provider - we can quickly connect you to DOW Networks’ Asterisk platforms, providing you with high quality call terminations, worldwide, at very low rates.
