Nortel Networks Circuit Card User Manual

 NT5D33 and NT5D34 Lineside E1 Interface cards

in the Analog (500/2500-type) Telephone Administration program 
LD 10. The LEI also comes equipped with a Man-Machine Interface 
(MMI) maintenance program, which provides diagnostic information 
regarding the status of the E1 link.

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NT5D33AC/NT5D34AC – Enhanced Lineside E1 Interface (ELEI) 
cards

The ELEI card is similar to an LEI card, but has been enhanced to allow 
the capability of transporting caller information using the proprietary 
signaling interface Channel Associated Signaling (CAS+). 

ELEI cards can operate in one of two modes: LEI mode, or enhanced 
(ELEI) mode. In LEI mode, this card is fully compatible with, and 
provides the same functionality as, the standard LEI card. In ELEI mode, 
this card can be connected to any CAS+ compliant systems. This 
includes wireless server hosting Digital Enhanced Cordless Telephones 
(DECTs), voice response units, voice messaging systems, and trading 
turret systems (used in stock market applications). More information 
regarding CAS+ can be obtained through Nortel Development Partner 
program.

Note: As the ELEI cards provide identical functionality to LEI cards, 
references to LEI cards in this chapter also apply to ELEI cards unless 
specified otherwise.

Install the NT5D33 version of the LEI/ELEI card in the NT8D37 IPE module.

Install the NT5D34 version of the LEI/ELEI card in:

•

the NTAK11 Cabinet

•

the NTAK12 Expansion Cabinet

•

the NT1P70 Small Remote IPE Main Cabinet

•

the NTAK12 Small Remote IPE Expansion Cabinet

The LEI mounts in two consecutive card slots in the IPE shelf. It uses 16 
channels on the first slot and 14 channels on the second. The LEI includes a