Connections & Setup
Parts Checklist
Make sure your package includes the following items:
Base | Handset | Handset cord | Line cords | AC power |
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| adaptor |
Telephone Jack Requirements
To use this phone, you will need an RJ11C (for a single line) or a RJ14C (for two lines) type modular phone jack, which might look like the one pictured here, installed in your home or office. If you don’t have either modular jack, call your local phone company to find out how to get one installed.
Wall plate
Modular
telephone line
jack
VERY IMPORTANT: In order to achieve full system operation (i.e. intercom, page, etc.), Line 1 must be connected and must be common to all phones connected to the system. Only other 25423, 25424, 25425, 25413, 25414, 25415, 25403 and 25404 models are compatible for full system operation. Connecting phones other than the 25423, 25424, 25425, 25413, 25414, 25415, 25403 and 25404 to Line 1 may inhibit the intercom and paging operations.
For proper operation of intercom, page function, etc., DO NOT connect a DSL modem to Line 1.
To transfer a call from one station to another, the two stations should be connected to the same line.