The GDK range was introduced In 1997. The system runs digital connections over 1 pair of wires to and from the handset. The wires are reversible and can be connected via CAT 5 cabling either directly or through a secondary adaptor.
Here is the GDK phone range Pre 2000:
| Type | Image | Comments |
|---|---|---|
| KD24 | 24 button, no LCD or 24 button with LCD. 12 Programmable buttons come with an LED, so status can be seen. You can label a button as an extension or a line. Note that the LCD and No LCD versions are different handsets. | |
| KD36 | 36 buttons, no LCD or 36 buttons with LCD. 24 Programmable buttons come with an LED, so status can be seen. You can label a button as an extension or a line. Again the LCD and No LCD versions are different handsets. |
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