SIP-to-SIP Extended Feature Functionality for Session Border Controllers
The SIP-to-SIP Extended Feature Functionality for Session Border Controllers (SBCs) enables the SIP-to-SIP functionality to conform with RFC 3261 to interoperate with SIP User Agents (UAs). The SIP-to-SIP Extended Feature Functionality includes:
•Call Admission Control (based on CPU, memory, and total calls)
•Delayed Media Call
•Configuring SIP Error Message Pass Through
•Interoperability with Cisco Unified Communications Manager 5.0 and BroadSoft
•TCP and UDP interworking
•Tcl scripts with SIP NOTIFY VoiceXML with SIP-to-SIP
•Transport Layer Security (TLS)
Cisco Unified Border Element
•Cisco IOS Release 12.4(6)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 3.1S or a later release must be installed and running on your Cisco ASR 1000 Series Router.