Specifications

Overview of Cisco Unified SRST

Prerequisites for Configuring Cisco Unified SRST

Cisco Unified Survivable Remote Site Telephony Version 4.0 System Administrator Guide

Cisco SRST and Cisco Unified SRST can be configured to support continuous multicast output of music

on hold (MOH) from a flash MOH file in flash memory. For more information, see the “Configuring

MOH from Flash Files” section on page 102. If you plan use music on hold, go to the Technical Support

Software Download site at http://www.cisco.com/cgi-bin/tablebuild.pl/ip-iostsp and copy the

music-on-hold.au file to the flash memory on your Cisco SRST or Cisco Unified SRST router.

Installing Cisco SRST V2.0 and V2.1

Download and install Cisco SRST V2.0 or Cisco SRST V2.1 from the Cisco Software Center at

http://www.cisco.com/public/sw-center/.

Installing Cisco SRST V1.0

Cisco SRST V1.0 runs with Cisco CallManager V3.0.5 only. It is recommended that you upgrade to the

latest Cisco Unified CallManager and Cisco Unified SRST versions.

Integrating Cisco Unified SRST with Cisco Unified CallManager

There are two procedures for integrating Cisco Unified SRST with Cisco Unified CallManager.

Procedure selection depends on the Cisco Unified CallManager version that you have.

If You Have Cisco CallManager V3.3 or Later

If you have Cisco CallManager V3.3 or later, you must create an SRST reference and apply it to a device

pool. An SRST reference is the IP address of the Cisco SRST router.

Step 1 Create an SRST reference.

a. From any page in Cisco CallManager, click System and SRST.

b. On the Find and List SRST References page, click Add a New SRST Reference.

c. On the SRST Reference Configuration page, enter a name in the SRST Reference Name field and

the IP address of the Cisco SRST router in the IP Address field.

d. Click Insert.

Step 2 Apply the SRST reference or the default gateway to one or more device pools.

a. From any page in Cisco CallManager, click System and Device Pool.

b. On the Device Pool Configuration page, click on the desired device pool icon.

c. On the Device Pool Configuration page, choose an SRST reference or “Use Default Gateway” from

the SRST Reference field’s menu.