Combination Extensions
A
combination extension is an extension with two devices connected to it—either
two standard devices, or a system phone and a standard device (but
not two
system phones). (For instructions on how to install a combination extension, see
the
PARTNER Advanced Communications System Installation guide.)
The following are examples of useful combination extensions:
System phone plus standard telephone, for power failure backup on
extensions 10, 11, 18, 19, 24, 25, 30, 31, 36, and 37
System phone plus answering machine
System phone plus fax machine
System phone plus headset
System phone plus an external alert (such as a bell or chime).
The telephones in a combination extension share a single extension in the same
way several home telephones share a single line. A system telephone works as
it always does and a standard telephone works as it always does when
connected to the system.
Only one phone or device can be used at a time,
unless you want to join the two on a single call (the same way two people can
pick up the same call on different telephones at home). For example:
Both phones share the same extension number.
Both phones share the same
voice path; that is, when either phone is
busy, the extension is busy.
Calls ring at both phones.
A second call can ring at the system phone while the standard phone is
busy, but do not use the system phone to answer the second call until the
standard phone is idle or the first call will be disconnected.
If you make a voice-signaled intercom call to a combination extension
with a system phone, only the system phone signals.
does not work on a standard phone in combination
with a system phone.
The lights on the system phone show what the standard telephone is
doing as well as what the system phone is doing. For an explanation of
light patterns, see “Lights” earlier in this chapter.
is active at a combination extension, no other extension can
join a call in progress at either a system phone or a standard device.
(However, a phone can interrupt a call on a standard device at the
same
extension. For example, if a system phone and modem are combined at
an extension, picking up the handset of the system phone could interrupt
a modem transmission, even if
is active.)
3-12
Learning About Telephones
Summary of Contents for PARTNER Advanced Communications System Release 1.0
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