Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario

 NT5D33 and NT5D34 Lineside E1 Interface cards

provides alarm notification, E1 link performance reporting, and fault 
isolation testing. The interface is accessed through connections from the I/O 
panel to a terminal or modem. Multiple cards (up to 64) can be served through 
one MMI terminal or modem by linking the LEIs through a daisy chain.

The MMI is an optional feature, since all E1 configuration settings are 
performed through dip switch settings or preconfigured factory default 
settings. Available MMI commands, and their functionality, are discussed 
in-depth in “Man-Machine E1 maintenance interface software” on 

As mentioned earlier, ELEI cards are enhanced to allow CAS+ compliance, 
as shown in Figure 40. This enhancement provides several additional benefits 
for systems with ELEI cards installed.

Note: MDECTS and ELEI (operating in enchanced mode) cannot be 
configured on the same system.

Key Benefits of using CAS+ signaling (ELEI mode) over traditional A/B bit 
signaling (LEI mode) include:

Calling Line ID Presentation (CLIP)

When an incoming call over the TDM/IP network or a CS 1000 
originated call is directed towards the CAS+ compliant system, Calling 
Line ID can be provided over the CAS+ interface. This is assuming that 
the incoming call has the CLID without any presentation restrictions.