Converged Transit Controller
Ericsson’s Converged Transit Controller (CTC) is a feature-rich, proven solution for all of today’s voice transit needs. Supporting regional, national, and international transit for wireline, mobile, and SIP voice, the Ericsson Converged Transit Controller is available as a native Converged Transit Controller or as a virtualized Converged Transit Controller (vCTC).
In addition to the standard transit mode, the Converged Transit Controller also provides a call mediation node (CMN) function, which enables transit functionality on call control without forcing the user plane through a media gateway node. Here, our long-lasting transit experience is combined with the latest cutting-edge technology to provide a seamless evolution supporting transit for enriched communications.
The Converged Transit Controller is the core of Ericsson’s Converged Transit portfolio, providing advanced call and session routing capabilities along with call detail record (CDR) generation for accounting. In addition to its classic transit role, it can also function as a proxy for SIP, SIP-I, and BICC as described by the GSM Association in its IPX network guideline. The portfolio is completed through a media gateway, where the session border controller (SBC) provides network security functions for SIP interconnect. Using ultra-high capacity nodes with superior inbuilt redundancy combined with network resilience features, service providers can build a cost-efficient, scalable, and highly available transit network.