Summary

This Supplement to ITU-T Q-series Recommendations is a technical report on the requirements for Capability Set 2 of the Support of Narrowband Services using Broadband Bearer Technologies. Its scope is limited to overall functionality of the Serving Node (SN) and the requirements common to associated protocols at the call control level, the bearer control level, the call-bearer interactions and the signalling transport needed to provide this capability across a variety of broadband backbone networks for Capability Set 2 (CS-2).