Nortel Networks Telephone NN10033-111 Bedienungsanleitung PDF herunterladen (Seite 14)

14 Overview

Nortel Networks Confidential

Figure 3 SIP-based Voicemail Server

For more information on how the SIP Application Module uses Media

Gateway Control Protocol Plus (MGCP+) to control the RTP Media

Portal, please refer to the MCP Media Portal Basics document.

For more information on how the IP Client Manager uses Unified

Networks IP Stimulus (UNIStim) to control the i2004 Internet

Telephone, please refer to the MCP IP Client Manager Basics

document.

Trunk-based voicemail servers

Trunk-based voicemail servers cannot directly communicate with the

MCP network. A SIP PRI Gateway is required for the MCP to interwork

with a trunk-based voicemail server. The SIP PRI Gateway also

provides a media path from the IP network to the voicemail server on

the PSTN.

A terminal server, using a Simplified Message Desktop Interface

(SMDI), sends data regarding the storage and retrieval of voicemail

from the trunk-based voicemail server to the MCP network. The MCP

network does not send data back to the voicemail server over the SMDI

link. Figure 4 shows a network view of the MCP interconnection with a

trunk-based third-party voicemail server.

SIP

RTP

MGCP+UNIStim

MCP network

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Nortel Networks Telephone NN10033-111 Bedienungsanleitung Seite 14