Station Features and Operation (PT/SLT)
User Manual 345
4.3.59 Paralleled 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.
To enable / disable SLT ringing
Conditions
• The default is "Parallel Off (No ring)."
• The PT can be used to perform normal operations whether or not the SLT is set to ring.
• When receiving a call:
—If SLT ringing is enabled, then both the PT and the SLT will ring except when the PT is
in "Hands-free 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.
• When the SLT is in use, the display and the indicators of the PT will work in the same way
as if the PT is in use.
• In the DPT + SLT combination, if one telephone goes off-hook while the other telephone is
on a call, the call is switched to the former.
• In the APT + SLT combination, if one telephone goes off-hook while the other telephone is
on a call, a 3-party call is established. If one user goes on-hook, the other user continues the
call.
• The "XDP
*1
" feature is available. Please refer to "EXtra Device Port (XDP)" in Section "1.1
System Expansion" of the Features Guide.
PT
Confirmation
tone and dial
tone
Dial 39.
Hang up or press
SP-PHONE/
MONITOR.
For Ring mode: Dial 1.
For No Ring mode: Dial 0.
No Ring
Ring
3 9
1
0
Lift the handset or press
SP-PHONE/MONITOR.
<PT Display Example>
— (when enabling)
— (when disabling)
Parallel Off
Parallel On
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