Summary - Q.3723 (04/2026) - Signalling requirements of virtualized broadband network gateway for service function chains

Recommendation ITU-T Q.3723 specifies the signalling requirements of virtualized broadband network gateway (vBNG) for service function chains (SFCs). As a background, this Recommendation gives the overview of the vBNG for SFC, with signalling framework between control plane (CP) and operation support system (OSS)/business support system (BSS); CP and authentication, authorization and accounting (AAA) systems and CP and user plane (UP). In addition, this Recommendation depicts the specific requirements and service procedures of the vBNG for SFC.