Communication To The Pbx; Serial Interface; Local Operation - Uniden DTL-8R-1 User Operation And Specification

3.3 Communication to the PBX

3.3.1 Serial interface

Serial communication between PBX Expansion board and the Base Station is performed by
UART (Universal Asynchronous Receive and Transmit) with 2400bps speed.

3.3.2 Local operation

These operations are independent from the PBX Expansion board control.
It is performed by the DTL-8R-1 itself.
1. Key press detection and emit key touch tone
2. RF link establishment
3. Show "ACQUIRING LINK"
4. Ringer volume setting
5. Switching Ear speaker and Hands free speaker
6. Ear speaker volume, Hands free volume and Headset volume change
7. Dial echo back on LCD
8. Mute
9. Redial (option)
10. Battery Status Icon change (Battery low detection)
11. Menu operation
12. Ring mute operation
13. One Touch Dial (option)
14. Headset operation
15. Contact List operation
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