Introduction to Media Resources

Table of contents:

A media resource is a software-based or hardware-based entity that performs media processing functions on the voice streams to which it is connected. Media-processing functions include mixing multiple streams to create mixed, unicast output streams (conferencing), passing the stream from one connection to another (Media Termination Point), converting the data stream from one compression type to another (transcoding), streaming voice progress tones (annunciation), and music on hold.

Every Cisco CallManager contains a software component called a Media Resource Manager (MRM) that communicates with MRMs on other Cisco CallManager servers. The MRM locates a media resource to connect the media streams and to complete the feature. The MRM manages the following media resource types:

  • Conference bridge
  • MTP
  • Annunciator
  • Transcoder
  • MoH server


To act as a Media Resource Manager, you must activate the Voice Media Streaming Application service on the Cisco CallManager server. This service is discussed in detail later in this chapter.

Your Cisco CallManager servers can also participate in the media-processing functions in the cluster. After Cisco CallManager is installed, you must activate these two Cisco CallManager services:

  • Cisco IP Voice Media Streaming Application The Cisco IP Voice Media Streaming Application provides voice media streaming functionality for Cisco CallManager for use with MTP, the annunciator, conferencing, and MoH. The Cisco IP Voice Media Streaming Application relays messages from Cisco CallManager to the IP voice media streaming driver. The driver handles the Real-Time Transport Protocol (RTP) streaming.
  • Cisco MoH Audio Translator The Cisco MoH Audio Translator service converts audio source files, which can be in .WAV or .MP3 format, into the appropriate MoH source file for various coder-decoders (codecs) so that the MoH feature can use them.

To activate the required services in Cisco CallManager, access the administration web page and choose Application > Cisco CallManager Serviceability. In the Serviceability window, choose Tools > Service Activation. You can activate the services on any server that you choose.

Conference Bridge Resources

Part I: Cisco CallManager Fundamentals

Introduction to Cisco Unified Communications and Cisco Unified CallManager

Cisco Unified CallManager Clustering and Deployment Options

Cisco Unified CallManager Installation and Upgrades

Part II: IPT Devices and Users

Cisco IP Phones and Other User Devices

Configuring Cisco Unified CallManager to Support IP Phones

Cisco IP Telephony Users

Cisco Bulk Administration Tool

Part III: IPT Network Integration and Route Plan

Cisco Catalyst Switches

Configuring Cisco Gateways and Trunks

Cisco Unified CallManager Route Plan Basics

Cisco Unified CallManager Advanced Route Plans

Configuring Hunt Groups and Call Coverage

Implementing Telephony Call Restrictions and Control

Implementing Multiple-Site Deployments

Part IV: VoIP Features

Media Resources

Configuring User Features, Part 1

Configuring User Features, Part 2

Configuring Cisco Unified CallManager Attendant Console

Configuring Cisco IP Manager Assistant

Part V: IPT Security

Securing the Windows Operating System

Securing Cisco Unified CallManager Administration

Preventing Toll Fraud

Hardening the IP Phone

Understanding Cryptographic Fundamentals

Understanding the Public Key Infrastructure

Understanding Cisco IP Telephony Authentication and Encryption Fundamentals

Configuring Cisco IP Telephony Authentication and Encryption

Part VI: IP Video

Introducing IP Video Telephony

Configuring Cisco VT Advantage

Part VII: IPT Management

Introducing Database Tools and Cisco Unified CallManager Serviceability

Monitoring Performance

Configuring Alarms and Traces

Configuring CAR

Using Additional Management and Monitoring Tools

Part VIII: Appendix

Appendix A. Answers to Review Questions


Authorized Self-Study Guide Cisco IP Telephony (CIPT)
Cisco IP Telephony (CIPT) (Authorized Self-Study) (2nd Edition)
ISBN: 158705261X
EAN: 2147483647
Year: 2004
Pages: 329 © 2008-2020.
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