Panasonic KX-T336 System Reference Manual page 538

11.00 Intercom Off-Hook Call
Announcement (OHCA)
Description
During a conversation using the handset by PITS
telephone KX-T7130, KX-T123235 or KX-
T123230D, the extension user can receive
another call from Intercom Calling or from
Attendant Console, unless the current call is
made by Intercom Calling.
To execute this function, optional T-SW OHCA
Expansion card (KX-T336105) and OHCA card
(KX-T96136) are necessary.
Programming
System Programming
"Configuration-Slot Assignment"
"Extension-Station (1/3)",
OHCA Circuit
Conditions
OHCA can be received only with the PITS KX-
T7130, KX-T123235, and KX-T123230D
telephones.
OHCA does not work if the receiving extension is
in the following situations:
• Talking in speaker phone mode.
• Do Not Disturb is set.
• ICM button is not idle.
• "System-Class of Service",
BSS/OHCA Deny is set to "Yes."
Reference
VT Dumb
10-C-2.00
9-C-2.00
10-C-22.00
9-G-1.01
4-G-17
Operation
Answering OHCA
You are having a conversation using the handset.
1. When the indicator on the ICM
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.