Panasonic KX-T336 System Reference Manual page 462

5.05 Intercom Off-Hook Call
Announcement (OHCA)
Description
When the called extension is busy talking on a
DN or CO button, and the ICM button is idle,
OHCA allows the calling extension user to inform
the called party that another call is waiting,
through the built-in speaker of the called party's
PITS telephone.
OHCA works under the following conditions:
• The ICM buttons on both the calling
extension's telephone and the called
extension's telephone are idle.
• The called extension's telephone is PITS
KX-T123230D, KX-T123235 or KX-T7130.
• The called extension's handset is off the
hook.
To activate this function, install T-SW OHCA card
(KX-T336105) in the Basic Slot 02, and OHCA
card (KX-T96136) on the PLC or HLC card.
Refer to Section 2-C-3.02 "T-SW OHCA Card
(KX-T336105)" and Section 2-C-3.03 "OHCA
Card (KX-T96136)" for further information.
In the system programming, assign "System-
Class of Service (1/2)", BSS/OHCA to "Yes" at
calling extension, and assign "Extension-Station
(1/3)", OHCA Circuit to "Yes" at the called
extension.
Programming
System Programming
"System-Class of Service (1/2)",
BSS/OHCA
"Extension-Station (1/3)",
OHCA Circuit
Reference
VT Dumb
9-D-4.01 10-C-7.00
9-G-1.01 10-C-22.00
4-C-21
Conditions
OHCA does not work if the called extension is
under one of the following conditions:
• The ICM button is not idle.
• Talking in the speaker phone mode.
• "System-Class of Service", BSS/OHCA
Deny is set to "Yes."
• "System-Class of Service", Call
Forwarding/Do Not Disturb is set to "Yes."
Operation
Executing OHCA
1. Lift the handset or press the SP-
PHONE button.
2. Press the ICM button.
3. Dial the intercom number of the
extension.
• When the extension is off-
hook, you hear confirmation
tone 3.
4. Talk to the other party.