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DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115
Issue 1
April 2000
Adding or Removing Cabinet Hardware
6-42Add DCS Interface
6
Add DCS Interface
Systems in a Distributed Communications System (DCS) network are
interconnected by both tie trunks (for voice communications) and data links (for
control and transparent feature information). These data links, also called DCS
signaling links, support the feature transparency.
Various subsets (depending on the specific configuration) of DS1 Interface
circuit packs (including TN464F, TN767E, and TN760E) provide the
voice-communications interface.
Meanwhile, the data link interface (between the processor and the physical
signaling link) is provided by (or through) a TN799 Control-LAN circuit pack. In
some configurations, the TN799 passes the signaling information over a separate
10BaseT TCP/IP network (usually via a hub). For use with 10BaseT, connect the
appropriate pins of the I/O field to the hub. For pinouts and diagrams, refer to the
installation manual for your cabinet type. In other configurations, the TN799
circuit pack carries signaling over point-to-point protocol (PPP) for subsequent
inclusion (via the switching fabric) in the same DS1 bit stream as the DCS voice
transmissions.
A TN780 Tone-Clock circuit pack (installed in the PPN) can interface external
Stratum 3 synchronization for DS1 connections.
For further information about DCS, refer to the following documents:
■
AT&T System 75/85 Network and Data Services Reference Manual
■
System 75 Application Notes Network Services
■
DEFINITY ECS Release 8 Administration for Network Connectivity
Add Circuit Packs
A TN464F, TN767E, or TN760E DS1 circuit pack is required for PPP connections.
A TN799 Control-LAN circuit pack is also required.
1. Determine the port assignments of the circuit packs to be added. If there
are no available port slots in the processor cabinet for the Control-LAN
circuit pack, place it in a R8 EPN cabinet port slot. You do not need to
power down the cabinet to install the circuit pack.