How To Use Cisco Unified Srst Gateways As A Multicast Moh Resource; Configuring Cisco Unified Communications Manager For Cisco Unified Srst Multicast Moh - Cisco CP-7911G-CH1 System Administrator Manual

How to Use Cisco Unified SRST Gateways as a Multicast MOH Resource

How to Use Cisco Unified SRST Gateways as a Multicast MOH
Resource
To use Cisco Unified SRST gateways as a multicast MOH resource, perform the following tasks:
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For Cisco Unified CM 8.0 or later, see the
section in the
document.
Configuring Cisco Unified Communications Manager for Cisco Unified SRST
Multicast MOH
The following sections describe the Cisco Unified CM configuration tasks for Cisco Unified SRST
multicast MOH:
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To use Cisco Unified SRST gateways as multicast MOH resources, you must configure
Cisco Unified Communications Manager to multicast MOH to the required branch sites. To accomplish
this, you must configure IP addresses, port numbers, the MOH source, and the MOH audio server.
Even though the MOH routing is set up to prevent the Cisco Unified CM-sourced multicast MOH from
actually reaching the WAN and the remote phones, the configured Cisco Unified CM MOH IP port and
address information are still used by Cisco Unified CM to tell the phones which multicast IP address to
listen to for MOH (for the MOH sourced by SRST).
Configuring the MOH server involves designating a maximum number of hops for the audio source. A
configuration of one hop keeps Cisco Unified CM multicast MOH packets from reaching the WAN, thus
spoofing Cisco Unified CM and allowing Cisco Unified SRST multicast MOH packets to be sent from
Cisco Unified SRST gateways to their component phones. For cases in which Cisco Unified CM
multicast must reach gateways that do not run Cisco Unified SRST, use the Cisco IOS ip multicast
boundary command to control where multicast packets go.
After the MOH server is configured, the MOH server must be added to a Media Resource Group (MRG);
the MRG is added to a Media Resource Group List (MRGL); and the designated Cisco Unified CM
branch gateways are configured to use the MRGL.
Five Cisco Unified CM windows are used to configure the MOH server, audio source, MRG, MRGL,
and individual gateways.
The last Cisco Unified CM configuration task involves creating an MOH region that assigns MOH G.711
codec usage for the central site or sites and branch office or offices.
Cisco Unified SCCP and SIP SRST System Administrator Guide
288
Appendix B: Integrating Cisco Unified Communications Manager and Cisco Unified SRST to Use Cisco Unified SRST

Configuring Cisco Unified Communications Manager for Cisco Unified SRST Multicast MOH,

page 288
Configuring Cisco Unified SRST for Multicast MOH from an Audio File, page 296
Configuring Cisco Unified SRST for MOH from a Live Feed, page 306
Cisco Unified Survivable Remote Site Telephony 8.0 Music On Hold Enhancement
Configuring the MOH Audio Source to Enable Multicasting, page 289
Enabling Multicast on the Cisco Unified Communications Manager MOH Server and Configuring
Port Numbers and IP Addresses, page 290
Creating an MRG and an MRGL, Enabling MOH Multicast, and Configuring Gateways, page 293
Creating a Region for the MOH Server, page 295
Verifying Cisco Unified Communications Manager Multicast MOH, page 296
Figure 4
Configuring MOH-groups for Cisco Unified SRST (fallback)
provides an overview of this process.
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