14
Single Line Telephone Wiring
Single pair (2 conductor) line cord connections:
For all extensions except those connected to key telephones, use only a 2-wire and not a 4-
wire connection. Some older telephones may use the outer two wires, which can disrupt either
the operation of the phones or the operation of key telephones at other locations. Some of the
equipment that will require a single pair (2-wire) line cord are: Electronic single line phones, door
phones, fax machines, or answering machines.
Some fax and answering machines require a longer ringing time for the machines to recognize an
incoming call. To adjust for this extended ring time you may want to program these stations with
Distinctive Ringing feature. The Distinctive Ringing feature will allow you to change the ringing
pattern of your extension equipment.
To change the ringing pattern:
1. Plug in a single line telephone set at the extension location
2. Lift the handset and dial “4711”
3. The extension is now programmed for a long ring pattern
Some single line telephones are polarity sensitive. If you go off-hook, and cannot break CO dial
tone, your phone is polarity sensitive. Reversing the White/Blue, Blue/White pair should correct
the problem.
Y
G
B
R
To Phone
2 Conductor
Line Card
White/Blue or
Green Wire
Blue/ White or
Red Wire
Cable
Installing Your Phone System Unit
Chapter
2
- Installation Guide
Содержание IPS 308
Страница 8: ...1 Introduction Chapter 1 Of IPS System...
Страница 11: ...5 Installation Chapter 2 Guide...
Страница 28: ...23 Functions Of Chapter 3 IPS System...
Страница 107: ...103 IPS System Used With Chapter 4 Ordinary Telephones...
Страница 132: ...129 IPS System Used With Chapter 5 IVT 16 Key Telephone...