Instruction manual

Issue 3 July 2001 1Send feedback: [e-mail]
trunks
Managing trunks
This section provides an overview of trunks and tells you how to
add trunk groups to your system
Understanding trunks
Trunks carry phone signals from one place to another. For
example, one type of trunk carries phone signals from your
switch to the central office (CO).
Groups of trunks perform specific functions. Use the following
table to help determine which types of trunk groups your
company uses.
trunk group description
Access Use access trunks to connect satellite switches to the main
switch in Electronic Tandem Networks (ETN). Access trunks
do not carry traveling class marks (TCM) and thus allow
satellite callers unrestricted access to out-dial trunks on the
main switch.
APLT Advanced Private Line Termination (APLT) trunks are used in
private networks. APLT trunks allow inband ANI.