16
KX-TG6440PK/KX-TGA641S/KX-TGA641T/KX-TGA740B
4.4.6.
Auto Disconnect Circuit
Function:
This circuit is used to detect the fact that another telephone connected to the same line is OFF-HOOK while the unit is in a
receiving status or OGM transmitting status.
Circuit Operation:
The voltage of pin 90 of IC501 is monitored. If a parallel-connected telephone is put into OFF HOOK status, the presence/
absence of a parallel connection is determined when the voltage changes by 0.2 V or more. When the set detects the parallel-
connected telephone is OFF HOOK status, the line is disconnected.
You can enable or disable the Auto Disconnect function.
See
Check Record
(P.54)
Summary of Contents for KX-TG6440PK
Page 2: ...2 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 28: ...28 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 4 10 Signal Route ...
Page 29: ...29 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B RF part signal route ...
Page 31: ...31 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 5 2 Display ...
Page 35: ...35 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 36: ...36 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 7 1 2 Programming using the Direct Commands ...
Page 37: ...37 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 38: ...38 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 7 2 Error Messages ...
Page 39: ...39 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 7 3 Troubleshooting ...
Page 40: ...40 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 41: ...41 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 42: ...42 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 66: ...66 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 67: ...67 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 11 1 2 Handset ...
Page 68: ...68 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 11 1 3 Charger Unit ...
Page 69: ...69 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 11 2 How to Replace the Handset LCD ...
Page 89: ...89 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B Memo ...