Panasonic KX-TD816 Programming Manual page 414

5.1 Optional Programming
Area Bit
07 1 Enables or disables the DTMF signals to
the ISDN line.
2,3 Reserved
4 Enables or disables the Whisper OHCA
feature.
5 Enables or disables the hooking signal
when the reverse signal does not return.
6 Reserved
7 Allows a beep or Music on Hold while
holding a call.
9,8 Determines how the call is treated when
a call from DISA arrives at a DND
extension or busy extension which has
disabled Call Waiting.
414
Explanation
Description Selection Default
0 : enable
1 : disable
0 : any telephone
1 : KX-T7400
series
telephones only
0 : disable
1 : enable
0 : beep
1 : usual music
source
01 : IRNA
10 / 11 : receive at
the CO button
(only flashes)
00 : busy tone is
sent
Features Guide
References
1 None
1 Whisper OHCA
1 None
1 Music on Hold
11 DISA
Optional Programming