Norstar DR5, Installer'S Manual

Page: 127 / 534

Data 121
Note: The digits provided by the CO need not match the
numbering plan. You can use the Configuration
heading to specify the digits that make a
target line ring. You can use the Configuration DN
or Auto DN settings to specify the numbers that make the
system answer a remote call automatically.
Target lines
‘A target line is a specific communication path reached by means
of digits received from an incoming trunk. Target lines are used
to answer incoming calls but cannot be used to make outgoing
calls.
Auto-answer loop start and E&M trunks, and DID trunks, provide
automated routing of calls to different destinations depending on
the digits dialed. The destination is usually a target line (a virtual
line) that can be assigned to telephones in the same way as a
physical line. Target lines provide for attendant by-pass (calling
directly to a specific department or individual) and line
concentration (one trunk can fan out into many target lines).
The digits received on an incoming trunk may be:
received from a Central Office (in the case of DID)
received from a PBX (in the case of E&M)
dialed by a remote user after having received system dial
tone (in the case of auto-answer loop start, auto-answer E&M
trunks or DID trunks).
By default, no target lines are assigned. However, if auto-answer
trunks are used in the system, you can assign target lines to sets
in the same way that other lines are assigned (in
2. Line
of Configuration).
Target lines are referred to by line numbers in the same way as
physical lines.
Modular DR5 Installer Guide