Panasonic KX-TD500 System Reference Manual page 534

11.00 Intercom Off-Hook Call
Announcement (OHCA)
Description
During a conversation using the handset by PITS
telephone KX-T7235, KX-T7130, KX-T123235 or
KX-T123230D, the extension user can receive
another call from Extension or from Attendant
Console.
OHCA works under the following conditions:
APITS and DPITS
• Basic shelf, expansion shelf 1, 2 have
fifteen OHCA path which are connected
each other.
APITS
• To activate this function by PLC or HLC
card, OHCA card (KX-T96136) is needed.
DPITS
• To activate this function, TSW Digital OHCA
card is needed.
DLC and DHLC card with DPITS
• A DLC card allows 8 DPITS telephones can
be called with the OHCA feature at the
same time.
DHLC card with APITS
• A DHLC card allows one APITS telephone
can be called with the OHCA feature at the
same time.
Programming
System Programming
"Configuration-Slot Assignment"
"Extension-Station (1/4)",
OHCA Circuit
"Extension-Station (2/4, 3/4)",
DN Key Type
Reference
VT Dumb
10-C-2.00 11-C-2.00
10-G-1.01 11-C-24.00
11-C-26.00
10-G-1.02
10-G-1.03
4-G-18
Conditions
OHCA can be received only with the PITS
KX-T7235, KX-T7130, KX-T123235, and
KX-T123230D telephones.
OHCA does not work if the called extension is
under one of the following conditions:
• The OHCA button is not idle
• Talking in the speaker phone mode
• Setting BSS/OHCA Deny
• Setting Do Not Disturb
• Using headset
Operation
Answering OHCA
You are having a conversation using the handset.
1. When the indicator on the OHCA
button lights in green, you hear
two beeps. At the same time the
microphone and the speaker for
hands-free turn on automatically.
Talk to the caller over the
speaker.
Finishing the original call during a conversation by
OHCA
You are having conversations with the original
caller and the OHCA caller.
1. Replace the handset.
• The original call is finished. The
OHCA call changes to hands-
free mode.
2. After finishing conversation, press
the SP-PHONE button.