SW520 has 2 line jacks and one phone jack. The line jacks can connect to PSTN line and VOIP line. Whenever there is a ring from either of them, the phone can ring and answer.
When  the  user  wants  to  make  a  phone  call,  it  goes  through LINE1 jack automatically .  If user dials #, 0 before the telephone number,  it  will dial out from LINE2 jack.

It is ideal for FXS VOIP units. Sometimes the  users don't  have  enough line  port on  PBX or KTS.  It  can  expand  the  number  of CO line ports.
 

Switching power included (100V-240V)
 
 

  ModelSW-520

       User manual
          EUR$36.8
             

Can Caller ID be displayed after install SW520?

       When SW520  is under idle status,  the PHONE jack is connected with L2, only when L1 rings, it switch
to L1.In  some  countries  such as  Netherlands , the telecom  provide  DTMF caller ID  format.  This  DTMF 
format  caller  ID  sends  BEFORE  the  ring.  So  if   user connects  PSTN  on  L1,  the  caller ID signal  will 
not  be  sent to the telephone. In this case,  if user connects  PSTN to L2 of SW520, will  be able to receive
the caller ID from PSTN. If  the other line  is  from VOIP  gateway , and sends  FSK signal, even it connects
on L1, can still view the caller ID.If  both  telephone  lines  connected  to  SW520 have DTMF caller ID, user
can  buy  our  SW220  to  convert  the  signal  to  FSK, and send after first ring, so both telephone lines can
have caller ID.

Wireframes

 

Application

 

Previous