Nortel Networks 553-3001-211 manual NTAK93 D-channel Handler Interface daughterboard, Contents

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NTAK93 D-channel Handler

Interface daughterboard

Contents

This section contains information on the following topics:

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 751

Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 752

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 753

Introduction

The NTAK93 provides the D-channel handler interfaces required by the

ISDN PRI trunk.

The DCHI performs D-channel Layer 2 message processing and transfers Layer 3 signaling information between two adjacent network switches. It is mounted on the NTAK09 1.5 Mb DTI/PRI card or the NTBK50 2.0 Mb PRI card (installed in the MG 1000S) using standoff reference pins and connectors. The NTAK93 daughterboard, when mounted on the NTBK50 PRI digital trunk card, is addressed in the same slot as the NTBK50. The NTAK93 daughterboard can use SDI I/O addresses 1 to 15 and port 1.

The NTAK93 provides the following features and functions:

•D-channel interface or DPNSS interface

•Special features included for LAPD implementation at DCH:

Circuit Card Description and Installation