SIP-to-SIP Basic Functionality for Session Border Controller

The SIP-to-SIP Basic Functionality for Session Border Controller (SBC) for Cisco Unified Border Element (Cisco UBE) feature provides termination and re-origination of both signaling and media between VoIP and video networks using SIP signaling in conformance with RFC 3261. The SIP-to-SIP protocol interworking capabilities of the Cisco UBE support the following:

  • Basic voice calls (Supported audio codecs include: G.711, G.729, G.728, G.726, G.723, G.722, AAC_LD, iLBC. Video codecs: H.263, and H.264)

  • Codec transcoding

  • Calling/called name and number

  • Dual-Tone Multifrequency (DTMF) relay interworking
    • SIP RFC 2833 <-> SIP RFC 2833
    • SIP Notify <-> SIP Notify

  • Interworking between SIP early-media and SIP early-media signaling

  • Interworking between SIP delayed-media and SIP delayed-media signaling

  • RADIUS call-accounting records

  • Resource Reservation Protocol (RSVP) synchronized with call signaling

  • SIP-SIP Video calls

  • Tool Command Language Interactive Voice Response (TCL IVR) 2.0 for SIP, including media playout and digit collection (RFC 2833 DTMF relay)

  • T.38 fax relay and Cisco fax relay

  • UDP and TCP transport

Feature Information for SIP-to-SIP Basic Functionality for Session Border Controller

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to https://cfnng.cisco.com/. An account on Cisco.com is not required.
Table 1. Feature Information for Configuring SIP-to-SIP Supplementary Features

Feature Name

Releases

Feature Information

SIP-to-SIP Basic Functionality for Session Border Controller

Baseline Functionality

The SIP-to-SIP Basic Functionality for Session Border Controller (SBC) for Cisco Unified Border Element (Cisco UBE) feature provides termination and re-origination of both signaling and media between VoIP and video networks using SIP signaling in conformance with RFC 3261.