Lucent Technologies Release 4.0 manual DEFINITY AUDIX System Release, Issue, Design and Operation

DEFINITY AUDIX System Release 4.0	Issue 1
System Description Pocket Reference 585-300-214	May 1999
Design and Operation
Hard Disk Drive	2-5

■DCP Mode 1 connections transmit data at 56 Kbps. DCP Mode 1 uses a DS1 facility on the switch or a dedicated facility on a T1 carrier.

■DCP Mode 3 connections transmit data at 64 Kbps. DCP Mode 3 can use a DS1 facility or an ISDN facility on the switch or a dedicated facility on a T1 carrier.

Figure 2-2 shows a DCP Mode 1 and DCP Mode 3 Digital Networking connection.

DEFINITY system

DEFINITY

AUDIX system

T1* PRI Port on a DS1 trunk

board*

cydxsl15 LJK 021999

*or ISDN for Mode 3

Figure 2-2. DCP Mode 1 and DCP Mode 3 Connections

Low-speed Digital Networking connections

DCP Mode 2 is a low-speed (9.6 Kbps) Digital Networking connection.3 DCP Mode 2 requires external hardware to translate digital transmissions to analog, but it works with most DEFINITY switch configurations.

3.The DEFINITY AUDIX system uses EIA RS-232 Asynchronous protocol to communicate with other AUDIX systems in a DCP Mode 2 connection. Some documentation for Lucent Technologies voice messaging systems may refer to low-speed Digital Networking connections as RS-232 connections.