Table of Contents
Advertisement
DS-1 configuration
This chapter gives an overview of how an MWC DMS-250 switch connects
a DS-1 trunk to a single-line private branch exchange (PBX).
Introduction
The ISDN digital trunk controller (DTCI) is an enhanced version of the
existing digital trunk controller (DTC) peripheral interface.
The following contingencies apply to the DTCI:
Hardware configuration
The printed circuit board hardware for the DS-1 trunks resides on the ISDN
digital trunk controller (DTCI) shelf, as shown in Figure 2-1.
The DTCI and the DTC share the same hardware configuration.
However, the DTCI must be equipped with an ISDN signaling
preprocessor (ISP) card. The ISP also goes through a warm switch of
activity (SWACT), along with the other processors that are resident on
the DTCI.
The DTCI and DTC both accommodate up to 20 DS-1s.
The DTCI supports the warm SWACT capability.
The DTCI supports PRI and non-PRI (AB-bit) trunk provisioning. This
type of access arrangement is called integrated trunk access. Integrated
trunk access means that a single DS-1 can be provisioned with both PRI
and non-PRI trunk types by altering tables LTCINV and TRKSGRP.
The DTCI does not support:
— the special tone receiver card
— CCS7 ISUP trunks
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
2-1
Advertisement
Table of Contents
