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Appendix C
Centrex operation
Centrex service call example
In the example on the left, when the calls coming
from 555-1237 or 555-1238 are not answered, if
you subscribe to the Centrex service provided by
your local telephone company, these calls will be
switched to the console telephone (EXT 11 in the
example).
1. An external call comes in on line 4 (telephone
number 555-1237 or 555-1238) on the original
system telephone (EXT 12 or EXT 13).
2. If the call is not answered during the CSL delay
time set on the original extension, (20 seconds
for EXT 12 or 16 seconds for EXT 13), the
console telephone (EXT 11) will ring and display
EXT XX RING.
3. Press the [LINE 4] key if line 4 is idle on the
console telephone (EXT 11). Dial the Centrex
access code (provided by your telephone
company) then the ringing line’s seven- or ten-
digit phone number, (as directed by your phone
company).
NOTES:
• If no one answers the call at the console
telephone for 10 seconds, the originating
extension will ring again.
• Outside calls will be answered by the auto
attendant (see the 1080 user’s manual for
details).
• Contact your telephone company for more details
about Centrex service.
If you subscribe to
Centrex service provided
by your local telephone
company, you need
to set up the system
telephones first: Here
is an example of one
setup.
EXT 11 (console)
CONSOLE is ON.
CSL DELAY RING is
OFF.
EXT 12
CONSOLE is OFF.
CSL DELAY RING is set
to 20 seconds.
EXT 13
CONSOLE is OFF.
CSL DELAY RING is set
to 16 seconds.
EXT 14
Both CONSOLE and
CSL DELAY RING
menus are OFF. (This
telephone does not use
the Centrex service.)