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SIP-to-SIP Basic Functionality

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IP-to-IP Gateway: SIP-to-SIP Basic Functionality

Table Of Contents

IP-to-IP Gateway: SIP-to-SIP Basic Functionality

Prerequisites

Restrictions

How to Configure SIP-to-SIP Connections in a Cisco Unified Border Element (Enterprise)


IP-to-IP Gateway: SIP-to-SIP Basic Functionality

SIP-to-SIP Basic Functionality for Cisco Unified Border Element (Cisco UBE) and Cisco Unified Border Element (Enterprise) (Cisco UBE (Enterprise)) provides termination and reorigination of both signaling and media between VoIP and video networks using SIP signaling in conformance with RFC3261. The SIP-to-SIP protocol interworking capabilities support the following:

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

Calling/called name and number

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

RSVP synchronized with call signaling

SIP-to-SIP Video calls

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

Prerequisites

Cisco Unified Border Element

Cisco IOS Release 12.2(13)T3 or a later release must be installed and running on your Cisco Unified Border Element.

Cisco Unified Border Element (Enterprise)

Cisco IOS XE Release 2.5 or a later release must be installed and running on your Cisco ASR 1000 Series Router.

Restrictions

Connections are disabled by default in Cisco IOS images that support the Cisco UBE (Enterprise).

How to Configure SIP-to-SIP Connections in a Cisco Unified Border Element (Enterprise)

To configure SIP-to-SIP connection types, perform the steps in this section.

SUMMARY STEPS

1. enable

2. configure terminal

3. voice service voip

4. allow-connections

5. exit

DETAILED STEPS
 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3 

voice service voip

Example:

Router(config)# voice service voip

Enters VoIP voice-service configuration mode.

Step 4 

allow-connections from-type to to-type

Example:

Router(config-voi-serv)# allow-connections sip to sip

Allows connections between specific types of endpoints in an Cisco UBE. Arguments are as follows:

from-type—Type of connection. Valid values: h323, sip.

to-type—Type of connection. Valid values: h323, sip.

Note H.323-to-H.323: By default, H.323-to-H.323 connections are disabled and POTS-to-any and any-to-POTS connections are enabled.

Step 5 

exit

Example:

Router(config-voi-serv)# exit

Exits the current mode.