SIP Ring Switch 4xOut - Switching by phone call - 57753 - W&T

May 23, 2022

Call to switch ...

The SIP Ring Switch allows Voice-over-IP telephone networks and equipment to be called from particular extensions to trigger switching events. 4 separate switching channel are provided. By dialing certain call numbers for example you can operate door openers, barriers and lights.

Voice-over-IP telephony

Telephone systems have been using Voice-Over-IP as a communication standard for some years already. The advantage of this technology is that telephones and PC as well as other terminal devices share the same network. Regardless of which network outlet a telephone is plugged into - it automatically registers with the telephone system and can be used immediately at the new location. Registering with the telephone system and control of the phone connections is handled by the SIP protocol (Session Initiation Protocol).



Switch using the SIP Ring Switch when a call is made

The SIP Ring Switch registers with the telephone system like an IP telephone. It can also represent multiple extensions. By creating an action you can determine what happens when a number stored in the SIP Ring Switch is called. Following are some of the possibilities:

  • An output is turned on for the duration of the call
  • An output is turned on with the incoming call
    A second call number can be used to turn the output off or reached via the web interface of the SIP Ring Switch
  • An output is turned on when a call comes in and turns off automatically after a configurable time
  • An output changes its switching state each time a call comes in


To protect from unauthorized switching you can specify from which station connection switching is allowed. Of course several authorized stations or entire groups can also be stored. In addition, a call can also trigger sending of an http(s) request to a third device where certain functions such as positioning of a web camera are performed. Other actions can be used to send emails when certain outputs are switched. By writing a log file via FTP you can record when an output was switched.


Application Examples

Triggering alarms by switching signal lamps, horns, bells or sirens

Remote opening of doors, gates or barriers

Controlling interior or exterior lighting