Specification :

Part I: Applications:
The line power call selector is suitable for people who have 2 outgoing telephone lines but want to use one single telephone set. People have a PSTN line in use, and they might want to install another VoIP line or GSM/ CDMA FWT line as usually the rate of other line is much cheaper.
1. It would take too much space of the desk if adopts 2 telephone sets for the 2 outgoing lines. We can solve the problem by installing a call selector with one single telephone set, and it is convenient to use.
2. People have installed a new lower rate telephone line, but the former line should still be used for incoming calls.
3. The company has installed some new lower rate telephone lines, but there are not enough outgoing ports with the PBX. It is more economical to install some call selectors than change a new PBX.

Part II: Features:
1. No need extra power supply, convenient to install.
2. No need any program, plug and play, easy to use.
3. One telephone set and 2 outgoing lines, both lines can call out and the telephone would ring when there are incoming calls for either line.
4. There would be busy prompt to the incoming caller side if there is incoming call when the other line is on talking.
5. Compatible with PBX, PSTN lines, VoIP gateways, GSM/ CDMA fixed wireless terminal, E1, etc.

Part III Userï ¿ ½ s Guide
1. Installation
Connect the prior use line to the LINE1 port of the call selector and the other line to the LINE2 port, link the PHONE port to the telephone set or the outgoing port of PBX.

2. To make call
The call would go through prior line automatically. However, if there is some problem with the prior line or users want to use the other line to make a call temporarily, users can select the other line manually by adding # # before the destination number.
3. To answer call
The telephone set would ring when there is call from either line, first incoming call would ring firstly. If there is incoming call from the other line when one line is on talking, the call selector would send busy prompt to the incoming callerï ¿ ½ s side automatically. So the other side can know the line is busy, not nobody answer the call.