SIP-to-SIP Supplementary Services for Session Border Controller
The SIP-to-SIP Supplementary Services for Session Border Controller (SBC) feature enhances terminating and re-originating signaling and media between VoIP and Video networks by supporting the following features:
•IP Address Hiding in all SIP messages including supplementary services
–Media Flow Around
•Support on Cisco AS5350XM and Cisco AS5400XM platforms
•SIP-to-SIP Supplementary services using REFER/3xx method. The following features are enabled by default:
–-Message Waiting Indication
–-Call Transfer (Blind, Consult, Alerting)
–-Call Forward (All, Busy, No Answer)
–-Music on Hold
•Hosted NAT Traversal for SIP
Cisco Unified Border Element
•Cisco IOS Release 12.4(9)T or a later release must be installed and running on your Cisco Unified Border Element.
Cisco Unified Border Element (Enterprise)
•Cisco IOS XE Release 3.1.0S or a later release must be installed and running on your Cisco ASR 1000 Series Router.