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3-98 Features
P 3 Features
Paralleled Telephone
Description Any analog proprietary telephone can be connected in parallel with
single line devices, such as a single line telephone, facsimile and
data terminal.
When a parallel connection is made, an extension user can make
and answer a call using either telephone.
Conditions • A proprietary telephone (PT) can perform normal operations even if
program [610] is assigned to “Disable”.
• If one telephone goes off-hook while the other telephone is having a
call, a three-party call will be established. If one user goes on-hook, the
other user will continue with the call.
• When receiving a call, both the PT and the single line telephone will
ring except when the PT is in the Hands-free Answerback mode.
• When the single line telephone is operating, the display and LED
indicator on the paired PT will work as if the PT is in operation.
• The extension user cannot originate a call from the single line telephone
if the PT is:
— playing BGM,
— in programming mode, or
— receiving a page announcement over the built-in speaker.
• The Call Waiting tone can only be heard by a PT.
• The paired single line telephone will not ring in the following cases.
— When the PT user sets the Hands-free Answerback feature.
— When the voice alerting mode is set on the PT.
• The paired single line telephone cannot use the following features.
— Call Splitting
— Conference
— External Feature Access
— Door Opener while talking to the doorphone
— Pickup Dialing
• The paired single line telephone user should not enter “49” or “ ”
before the account code. They cannot enter the account code during or
after a call.
Connection Reference
Section 2, Installation
2.3.7 Paralleled Telephone Connection (for a Proprietary Telephone and
a Single Line Telephone)
Programming Reference
Section 4, System Programming
[610] Paralleled Telephone Connection
Feature References None
Operation Reference Telephone Features
— User Manual Paralleled Telephone Connection