Features and Specifications Manual
T1 – 569
Doc.
No. 8201 -
Release 1.0
July 2003
Tandem Switching of
4-Wire E&M Tie Lines
T-1
FEATURE
DESCRIPTION
The Tandem Switching of 4-wire E&M Tie Lines feature allows connecting
E&M Tie Lines to other trunks through the system without help or
supervision from an internal station to allow distant-end system users to
remotely access trunks. Pad control is provided on the TLI(2)-U( ) ETU by a
programmable transmission pad to adjust to the line loss levels of the Tie
line accessed.
SYSTEM
AVAILABILITY
Terminal Type
All terminals.
Required Components
TLI(2)-U( ) ETU
OPERATING
PROCEDURES
Select an E&M Tie Line and dial a station number or Trunk Group Access
Code and telephone number in the distant-end system.
- OR -
The distant-end system user selects an E&M Tie line (from the local
system) and dials the applicable Trunk Access Code and the desired
number or extension number in the local system.
SERVICE
CONDITIONS
Data Assignment
The TLI(2)-U( ) ETU has an Internal Software pad control and an
External Software pad control.
Internal Software pad control is applied during E&M Tie line (transmit
and receive) connections.
External Software pad control applies to the following connections:
z
E&M Tie Line to CO Trunk
z
E&M Tie Line to E&M Tie Line
z
CO Trunk to E&M Tie Line
Restrictions
The tandem connection is not monitored for Code Restriction or
for LCR.
To use this feature:
