TIMG Integration Guide for Cisco Unity Connection Release 9.x
Introduction
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Introduction

Table Of Contents

Introduction

Integration Description

Serial Integration with TIMG Units

In-Band Integration with TIMG Units

Call Information

Integration Functionality

Integrations with Multiple Phone Systems


Introduction


See the following sections in this chapter:

Integration Description

Call Information

Integration Functionality

Integrations with Multiple Phone Systems

Integration Description

Cisco Unity Connection supports integrations through TIMG units (media gateways) with supported phone systems that provide in-band call information and MWI requests through the T1 digital lines.

Cisco Unity Connection supports integrations through TIMG units (media gateways) with the following phone systems:

Any phone system that provides call information and MWI requests through a serial data link (SMDI, MCI, or MD-110 protocol) to the master TIMG unit. For details, see the "Serial Integration with TIMG Units" section.

A supported phone system that provides in-band call information and MWI requests—through the T1 digital lines. For details, see the "In-Band Integration with TIMG Units" section.

Serial Integration with TIMG Units

The phone system sends call information and MWI requests through the data link, which is an RS-232 serial cable that connects the phone system and the master TIMG unit. Voice connections are sent through the T1 digital lines between the phone system and the TIMG units. The TIMG units communicate with the Cisco Unity Connection server through the LAN or WAN by using Session Initialization Protocol (SIP). Figure 1-1 shows the required connections for a serial integration by using TIMG units.

Figure 1-1 Connections for a Serial Integration by Using TIMG Units

In-Band Integration with TIMG Units

The phone system sends call information, MWI requests, and voice connections through the T1 digital lines, which connect the phone system and the TIMG units. The TIMG units communicate with the Cisco Unity Connection server through the LAN or WAN by using Session Initialization Protocol (SIP). Figure 1-2 shows the required connections for an in-band integration by using TIMG units.

Figure 1-2 Connections for an In-Band Integration by Using TIMG Units

Call Information

The phone system sends the following information with forwarded calls:

The extension of the called party

The extension of the calling party (for internal calls) or the phone number of the calling party (if it is an external call and the system uses caller ID)

The reason for the forward (the extension is busy, does not answer, or is set to forward all calls)

Cisco Unity Connection uses this information to answer the call appropriately. For example, a call forwarded to Cisco Unity Connection is answered with the personal greeting of the user. If the phone system routes the call without this information, Cisco Unity Connection answers with the opening greeting.


Note Serial integrations send requests to turn on and turn off MWIs through the data link.


Integration Functionality

The TIMG integration provides the following integration features:

Call forward to personal greeting

Call forward to busy greeting

Caller ID

Easy message access (a user can retrieve messages without entering an ID because Cisco Unity Connection identifies the user based on the extension from which the call originated; a password may be required)

Identified user messaging (Cisco Unity Connection identifies the user who leaves a message during a forwarded internal call, based on the extension from which the call originated)

Message waiting indication (MWI)

Integrations with Multiple Phone Systems

Cisco Unity Connection can be integrated with two or more phone systems at one time. For information on the maximum supported combinations and instructions for integrating Cisco Unity Connection with multiple phone systems, see the Multiple Phone System Integration Guide for Cisco Unity Connection Release 9.x at http://www.cisco.com/en/US/products/ps6509/products_installation_and_configuration_guides_list.html.