Check Line Survey Line Telephone Line Dedicated Machine Connectors Joiner
Three kinds of external plug head.
FSK / DTMF dual system Caller ID.
The last number redial function group.
Telecom, China Netcom, China Railcom dedicated check line.
Instructions for use :
Answer the call :
Bell time, press the on / off button to answer the call.
When the call is completed, press the on / off and hang up.
Press the (ON / OFF) button, the working indicator lights up. You can hear a dial tone after dialing.
After dialing the number, if you hear a busy tone, press the (FLASH) button, the phone will automatically close the line once.
When you hear a dial tone just press (REDIAL) button, telephone redial.
When the call is completed, press the (ON / OFF) button again, work light goes out.
1 x Phone
1 x Junction box
1 x User Manual
2 x Straight line
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