Orbtalk have a range of SIP trunk products that work with the Zultys MX Range
MX25
The MX25 provides flexible options for interconnecting telephony products to your VoIP network. It accommodates SIP transport for 30 simultaneous voice channels from any combination of telephony circuits. Available modular interfaces are T1 CAS, PRI, E1, FXO, FXS, and ISDN BRI. The MX25 can be used as a SIP gateway, or as a remote survivability module for the MX250.
MX30
The MX30 is a robust IP system that enables multimedia communications for all workers in a small office or branch location. By integrating the functions of many applications into a compact box, the MX30 simplifies the deployment of VoIP within the client’s network. In addition to providing a comprehensive unified communications solution, the MX30 is easy to install, use, and maintain.
MX250
The MX250 is an IP PBX platform that integrates multimedia communications for businesses, large and small, into a single server compact system. All connections are made through standard interfaces. The MX250 integrates the functions of many applications into one Unified Communications platform without the requirement of a complex server cluster. By integrating these functions into a single unit, Zultys delivers a cost effective, easy to provision, easy to use system that is also easily managed and expanded.