Instruction manual

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
II Communications System Installation guide.)
The following are examples of useful combination extensions:
System phone plus standard telephone, for power failure backup on
extensions 10, 16, 22, 28, 34, 40, 46, and 52
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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).
Using the telephones in a combination extension is fairly simple. The main point
to understand is that the two telephones share a single extension in the same
way several home telephones share a single line. A system telephone works
like it always does and a standard telephone works like 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). Furthermore:
Both phones share the same extension number.
Both phones share the same voicepath; that is, when either phone is
busy, the extension is busy.
If Privacy 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 Privacy is active.)
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” at the beginning of this chapter.
Calls ring at both phones.
You can handle a call on the standard telephone by pressing buttons on
the system phone. For example, you can use the system phone to select
a specific outside line, and conduct the call on the standard phone. Or, if
someone is on a call using the standard telephone, someone else can
put that call on hold by pressing [
Hold ] on the system phone. To do this,
it is not necessary to lift the handset of the system phone. Held calls do
not ring back at a standard phone in a combination extension. To retrieve
a held call from the standard phone, use Direct Line Pickup.
You can also use dial-code features at the system phone while the
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standard phone is on a call.
3-10 Learning About Telephones