Combination Extensions; Feature Phones - Avaya Partner 18 Programming And Use Manual

Users cannot access the following system features: Account Code
Entry, Background Music, Do Not Disturb, Exclusive Hold, Privacy,
Save Number Redial, VMS Cover, Voice Interrupt on Busy, Voice
Interrupt on Busy Talk-Back, and Voice Mailbox Transfer.
Do not use Forced Account Code Entry with a standard phone,
because the phone will bot be able to get dial tone and make calls.

Feature Phones

A feature phone is a standard telephone that has feature buttons in addition to
the regular 12-key dial pad. For example, there are feature phones that have
programmable auto dial buttons, last number redial buttons, hold buttons, and
built-in speakers. Even though some feature phones have buttons like those
provided on system phones, they may not work. Refer to the feature phone's
documentation for more information on what these phones can do.

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 Plus 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, and 28
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 thing
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). For example:
Both phones share the same extension number.
Both phones share the same voicepath, 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.
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Learning About Telephones