Panasonic KX-TD500 System Reference Manual page 591

3.02 Voice Calling
Description
Voice Calling allows an extension user to call
another PITS extension user with his voice
instead of ringing.
While calling an extension, the user can change
the voice calling mode to the ringing mode by
pressing " * ". The ringing mode cannot be
changed to the voice calling mode while calling.
Programming
System Programming
"System-Numbering Plan (6/11)",
Voice Calling Mode Set
Voice Calling Mode Cancel
Conditions
If the called extension has enabled Voice Calling
Deny, Voice Calling results in ringing call even
though the caller sets "Voice Calling Mode Set".
For further information about Voice Calling Deny,
refer to Section 4-D-2.02 "Voice Calling Deny".
Use PDN button to set or cancel this feature.
Operation
Setting the Voice Calling mode
1. Lift the handset.
• You hear dial tone 1, 3, or 4.
2. Dial the feature number for
"Voice Calling Mode Set (Default
: Y57)".
• You hear confirmation tone 1 or
2.
Reference
VT Dumb
10-D-6.06 11-C-11.00
5-A-11
Canceling the Voice Calling mode
1. Lift the handset.
• You hear dial tone 1, 3, or 4.
2. Dial the feature number for
"Voice Calling Mode Cancel
(Default : #57)".
• You hear confirmation tone 1 or
2.
Changing to the ringing mode during Voice
Calling
1. Lift the handset.
• You hear dial tone 1, 3, or 4.
2. Dial the directory number of the
other extension.
• You hear confirmation tone 3.
• Start Voice Calling to the
opposite party.
3. Dial "Y".
• Ringing the other party starts.
• You hear ringback tone.