Function:

1. Can make it use telephone exchange, last voice suggestion, can give automatically by every machine not sub to according to the needs of incoming telegram user, the sub machine has wireless conversation functions.

2. Can call out freely host computer machine not sub, collect too there aren't group, but they are that the inside converse, not count the telephone expenses.

3. Sub machine can serve as cordless telephone alone, pull out outwards by number directly. The all right antithetical Phase machine of the host computer is controlled(inquire about the sub machine conversation situation, restriction son pull out number to the outside in chance).

4. The sub getting farther most in machine conversation the distances is for 25 kilometers, and last function for incoming telegram.

5. Sub for machine, adopt way communication not duplexing of host computer, can last channel communication and scanning not automatic of 40 pieces.

6. Communication frequency 254-270MHz(launch host computer) / 381-400 MHz(launch machine not sub).

7. Host computer last parts of machine not sub not many. Sub machine obstructed outside line go on talkback, sub machine and outside line mutual switching very and keep secret each other of sub machine very.

8. Last function, dtmf and the fsk rule not compatible for incoming telegram machine, host computer not sub.

9. Can store machine not sub because recently suitable for and inquire about 20 groups of incoming telegram numbers, and can go back and pull out automatically.

10. Make up it can last 100, 000 group password, stop and steel and play.

11. A host computer can mix 99 at most platform machine.