Avaya Communication Manager Administrator's Manual page 1228

Screen Reference
TEI
Valid entries
auto
0
Termination Type
When a MM720 media module is used as a trunk interface, and the MM720 supports both Line
side and Trunk side of BRI, use this field to indicate whether the media module is to operate in
Terminal or Network termination mode.
Note:
On a MM720 that can function only as a BRI Trunk Media Module (i.e., MM720
Note:
without the firmware upgrade that supports both line side and trunk side of BRI),
this field defaults to TE and is display-only.
Valid entries
TE
NT
1228 Administrator Guide for Avaya Communication Manager
Usage
TEI is assigned automatically by the network.
TEI is fixed.
Usage
Terminal Endpoint termination. The MM720 provides the TE side of the BRI
interface. This is the default.
Network Termination. The MM720 provides the NT side of the BRI interface.