Colt Voice Line delivers direct ISDN to your TDM-based PBX with enhanced geographic coverage via Next Generation IP technology, utilising SIP trunking to deliver over a variety of IP based access.
Colt SIP Trunking is offered through a variety of access options to your IP-PBX and optimises your telephony in a single, IP-based network.
We support all of your connectivity requirements from standalone connections to voice-data converged over Colt’s Internet access or private IP networks.