Cisco Unity

Document ID: 13970

Contents

Introduction
Prerequisites
      Requirements
      Components Used
What bandwidth is used when streaming on a network with Cisco Unity is used?
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Related Information

Introduction

This document discusses Cisco Unity network bandwidth.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document is based on Cisco Unity for Exchange Unified Messaging.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

What bandwidth is used when streaming on a network with Cisco Unity is used?

There is no exact way to measure the impact on a network (bandwidth) because there are many variables and every network is different. These numbers are approximate.

By default, messages are recorded in 8 K/sec MuLaw format8K MuLaw samples at 8 k/sec. 8K MuLaw streams at 64 k/sec. Messages recorded in G.729a format roughly sample at 4 k/sec (roughly) and store at about 1 k/sec. G.729a streams at about 24 k/sec.

Since voice is a real time protocol (RTP), a switched network is required to ensure high voice quality.

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Related Information

• Voice Technology Support
• Voice and Unified Communications Product Support
• Recommended Reading: Troubleshooting Cisco IP Telephony
• Technical Support & Documentation - Cisco Systems