Nortel Networks P0857846 User Manual

Page of 187
General System features / 141
P0857846 Issue 02
Norstar-PLUS Modular ICS 2.0 System Coordinator Guide
Calls on lines that ring but do not appear at a telephone are 
presented at an intercom button.
You may be able to answer a call on a line that does not appear or 
ring at your telephone. To pick up such a call, use Call Pickup, Call 
Park, or Trunk Answer. 
A telephone may have buttons assigned for lines 001 to 003, but 
have only lines 001 and 002 programmed to ring as well. An 
incoming call on any of the three lines causes a line button indicator 
to flash, and the telephone can be used to answer the call. This is 
especially useful for people who monitor other telephone lines, but 
want only their own lines to ring.
Target line
A target line is used to route a call directly to a particular telephone 
or group of telephones. Target lines are only used for incoming calls. 
A single incoming line may provide connections to several different 
target lines. This allows each person or department in the office to 
have their own number without having a separate external line for 
each number.
Line pools
A line pool allows each telephone access to external lines from a 
group (or pool) of external lines. You can access such lines by 
pressing an intercom button and entering a line pool access code or 
by pressing a memory button programmed with the line pool feature 
code and a line pool access code.
Overflow call routing
If a call comes in for a target line that is busy, Norstar routes the 
call to the prime telephone for that target line. If there is no prime 
Tip - 
The maximum number of target lines 
available in the fully expanded XC system is 192, 
and 128 on a DR 2.0 system.