7-72 SLT and ISDN Telephone Features
P 7.2 SLT and ISDN Telephone Features
Conditions
• A confirmation tone is audible when the page is answered. Eliminating the tone is
programmable.
Programming References
• System Programming — Installation Manual
[990] System Additional Information, Field (16)
Parallelled Telephone Connection
A proprietary telephone (PT) can be connected in parallel with a single line telephone
(SLT). This feature allows you to enable or disable SLT ringing. When a parallel
connection is made, either telephone can be used. The SLT can be disabled by the PT
user.
Conditions
• Default is “Parallel Off.”
• When receiving a call:
— If SLT ringing is enabled, then both the PT and the SLT ring except when the PT
is in “Handsfree Answerback” mode or Voice-Calling mode with the “Alternate
Calling — Ring/Voice” feature.
— If SLT ringing is disabled, then the PT rings but the SLT does not. However the
SLT can answer the call.
• If you go off-hook while your parallelled telephone is in use, the call will switch over
to your telephone, and vice versa.
• “XDP*” feature is available. Refer to the Installation Manual.
Feature References
Alternate Calling — Ring/Voice (4.2/DPT Features)
EXtra Device Port (XDP) (→ see Installation Manual)
Handsfree Answerback (4.2/DPT Features)
* XDP (eXtra Device Port) expands the number of telephones available in the system by allowing an
extension port to contain two telephones.
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