Nortel Networks Circuit Card Manuale Utente

Pagina di 908
Page 249 of 906
312
NT5D33 and NT5D34 Lineside E1
Interface cards
Contents
This section contains information on the following topics:
Introduction
Two vintages of NT5D33 and NT5D34 cards are supported:
NT5D33AB/NT5D34AB – standard Lineside E1 Interface (LEI) cards
The LEI card is an IPE line card that provides an all-digital connection 
between E1–compatible terminal equipment (such as a voice mail 
system) and CS 1000S, CS 1000M, or Meridian 1. 
The LEI interfaces one E1 line, carrying 30 channels, to the CS 1000S, 
CS 1000M, or Meridian 1, and emulates an analog line card to the system 
software. Each channel is independently configured by software control