Stereo System User Manual

DEFINITY AUDIX System Release 4.0

System Description Pocket Reference

585-300-214

Issue 1

May 1999

Design and Operation

2-4

Hard Disk Drive

Networking features. In its maximum configuration, the DEFINITY AUDIX

system can connect through this Digital Networking channel to up to 100

remote systems, or

nodes

Digital Networking offers several advantages over AMIS Analog

Networking:

■ Digital Networking is more secure than AMIS Analog Networking.

■ Digital Networking uses Lucent Technologies’ Digital

Communications Protocol (DCP) to send subscriber profiles and

message status information along with messages, while AMIS

does not send this information.

■ Digital Networking messages have higher voice quality than

AMIS messages because Digital Networking uses CELP

encoding.

There is one important consideration, however, for customers who want

to use Digital Networking. If customers use Digital Networking, the

DEFINITY AUDIX system will have a maximum of 8 voice ports, rather

than 12. Ta b l e 2 - 1

shows the maximum number of voice ports the

DEFINTIY AUDIX system can have with and without Digital Networking.

High-speed Digital Networking Connections

The DEFINTIY AUDIX system offers three types of Digital Networking

configurations: DCP Mode 1, DCP Mode 2, and DCP Mode 3.

DCP Mode 1 and DCP Mode 3 connections are high-speed Digital

Networking connections. DCP Mode 1 and DCP Mode 3 connections

require high-speed facilities to operate, but these connections offer

advantages where there is heavy voice messaging traffic among

customer sites. These high-speed Digital Networking connections can

accommodate the maximum numbers of local subscribers (2000) and

remote subscribers (100,000) the system allows.

2. This configuration is only available with high-speed Digital

Networking connections.

Table 2-1. Maximum Voice Ports and Digital Networking Ports

Digital Networking ports Voice ports

Without Digital Networking 0 12

1. In switch releases earlier than Version 2, the system has a

maximum of 8 voice ports.

With Digital Networking 1 8