Page 250 of 906 NT5D33 and NT5D34 Lineside E1 Interface cards553-3001-211 Standard 3.00 August 2005in the Analog (500/2500-type) Telephone Administration programLD 10. The LEI also comes equipped with a Man-Machine Interface(MMI) maintenance program, which provides diagnostic informationregarding the status of the E1 link.• NT5D33AC/NT5D34AC – Enhanced Lineside E1 Interface (ELEI)cardsThe ELEI card is similar to an LEI card, but has been enhanced to allowthe capability of transporting caller information using the proprietarysignaling 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, andprovides the same functionality as, the standard LEI card. In ELEI mode,this card can be connected to any CAS+ compliant systems. Thisincludes wireless server hosting Digital Enhanced Cordless Telephones(DECTs), voice response units, voice messaging systems, and tradingturret systems (used in stock market applications). More informationregarding CAS+ can be obtained through Nortel Development Partnerprogram.Note: As the ELEI cards provide identical functionality to LEI cards,references to LEI cards in this chapter also apply to ELEI cards unlessspecified 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 CabinetPhysical descriptionThe LEI mounts in two consecutive card slots in the IPE shelf. It uses 16channels on the first slot and 14 channels on the second. The LEI includes a
