Cisco Unified Border Element (Enterprise) SIP Support Configuration Guide, Cisco IOS XE Release 3S
SIP-to-SIP Supplementary Services for Session Border Controller
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SIP-to-SIP Supplementary Services for Session Border Controller

SIP-to-SIP Supplementary Services for Session Border Controller

The SIP-to-SIP Supplementary Services for Session Border Controller (SBC) feature enhances the terminating and reoriginating of signaling and media between VoIP and video networks.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Prerequisites for SIP-to-SIP Supplementary Services for Session Border Controller

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.

Information About SIP-to-SIP Supplementary Services for Session Border Controller

SIP-to-SIP Supplementary Services for Session Border Controller

The SIP-to-SIP Supplementary Services for Session Border Controller (SBC) feature enhances terminating and reoriginating of signaling and media between VoIP and video networks by supporting the following features:

  • IP Address-Hiding in all Session Initiation Protocol (SIP) messages including supplementary services
  • Media Flow Around
  • Hosted Network Address Translation (NAT) Traversal for SIP
  • Support on Cisco AS5350XM and Cisco AS5400XM platforms
  • SIP-to-SIP Supplementary services using REFER/3xx method.

    Note


    The following features of SIP-to-SIP Supplementary services using REFER/3xx method are enabled by default:


    • Message Waiting Indication
    • Call Waiting
    • Call Transfer (Blind, Consult, Alerting)
    • Call Forward (All, Busy, No Answer)
    • Distinctive Ringing
    • Call Hold/Resume
    • Music on Hold

Digital Signal Processors (DSPs) and SIP Call Hold/Resume

Digital Signal Processors (DSPs) generate and transmit Real-time Transport Protocol (RTP) media packets from a source to a destination address during a SIP call session. However, when a SIP call is put on hold, DSPs stop generating the RTP media packets and resumes generating and transmitting the RTP media packets after the SIP call is resumed. This ensures that the RTP sequence number is continuous from the time of origin until the end of the SIP call.

How to Configure SIP-to-SIP Supplementary Services for Session Border Controller

To configure the SIP-to-SIP Supplementary Services for Session Border Controller feature, see the Supplementary Services Features for FXS Ports on Cisco IOS Voice Gateways Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/ios/voice/fxs/configuration/guide/15_0/fxs_15_0_cg.html .

Feature Information for SIP-to-SIP Supplementary Services 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 www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Table 1 Feature Information for Configuring SIP-SIP Supplementary Features

Feature Name

Releases

Feature Information

SIP-to-SIP Supplementary Services for Session Border Controller

12.4(9)T

15.1(1)T5

The SIP-to-SIP Supplementary Services for Session Border Controller feature enhances terminating and reoriginating of signaling and media between VoIP and video networks.

No new commands were added or modified.

SIP-to-SIP Supplementary Services for Session Border Controller

Cisco IOS XE Release 3.1S

The SIP-to-SIP Supplementary Services for Session Border Controller feature enhances terminating and reoriginating of signaling and media between VoIP and video networks.

No new commands were added or modified.