In an era of increasing digitalization, controlling electrical systems through existing communication networks offers a forward-thinking approach to process optimization. The SIP Ring Switch 4xOut from Wiesemann & Theis uses the established Voice-over-IP (VoIP) protocol to trigger switching operations directly via a telephone network. This merges the boundaries between IT and building control, unlocking new possibilities in automation – efficient, secure, and easy to implement.

The device combines four individually controllable digital output channels with modern network technology, ensuring flexible integration into existing systems. It is specifically designed for applications such as door control, barrier automation, lighting control, or access systems and is ideally suited for both building and home automation as well as industrial control solutions. Each switching operation can be triggered simply by calling a predefined extension – a concept that blends user-friendliness with cost efficiency.

Four flexible switching channels with VoIP control

The SIP Ring Switch 4xOut features four individually configurable 24V outputs. Each output can drive currents up to 500 mA, and with coupling relays, even 230V loads such as door drives or lighting systems can be switched. The outputs can be used either for continuous on/off control or for short switching pulses, for example, to activate door openers or motor controllers.

Switching operations are triggered via targeted calls within the VoIP network. When a specific extension is dialed, the device automatically executes the assigned switching action. This allows simple and secure control from any VoIP-capable environment – whether via IP phones, softphones, or mobile devices.

Simple configuration via web interface

The SIP Ring Switch is managed through a clear, modern web interface available in both German and English, optimized for smartphones and tablets. The interface allows all four switching channels to be monitored, triggered manually, and configured in real time. For administrators, it provides a quick overview of device status, logs, and received VoIP commands.

Secure network access via HTTP and HTTPS is also supported. Developers can implement custom control and monitoring applications using HTTP requests, AJAX, or JavaScript. This enables system integration into centralized dashboards or connection to external user management platforms.

Integration with VoIP systems such as Asterisk

The SIP Ring Switch 4xOut is fully VoIP-compatible and supports the SIP protocol, which has become the standard in modern communication infrastructures. Particularly noteworthy is its compatibility with Asterisk, the well-known open-source telephony platform. This allows connection to existing telephone servers or cloud-based PBX systems without additional hardware or complex configuration.

The combination of traditional VoIP infrastructure with digital control functionality makes the SIP Ring Switch a versatile addition to building and security systems, enabling command transmission through existing communication networks.

Advanced communication features

In addition to direct VoIP control, the device can communicate through standard network interfaces. Besides HTTP and HTTPS, TCP and UDP sockets as well as FTP are supported. FTP enables comprehensive logging of all switching events for documentation, process analysis, and audit purposes.

Up to 30 configurable actions can be defined to automatically execute upon an incoming call or state change. These include:

• Automatic email notifications to defined contacts
• Uploading switching logs via FTP
• Triggering external events through HTTP requests
• Controlling other devices on the network or via cloud systems

This flexibility allows the SIP Ring Switch to serve as a central control component within larger automation networks.

Precise time management and logging

The device includes an internal, battery-backed real-time clock for precise timestamping of every switching event. Synchronization with an NTP time server ensures all events are recorded chronologically and accurately. These logs can be used for monitoring usage patterns or diagnosing operational issues.

Practical and industrial application fields

• Access systems: controlling door openers, barriers, or turnstiles through VoIP calls
• Building automation: simple VoIP-based lighting or shutter control
• Home automation: activating lighting, alarm, or heating systems via IP phones
• Remote control: utilizing existing communication networks for remote site operation
• Industrial systems: integration into higher-level control systems for machine or security operation

With the ability to connect 230V devices via coupling relays, the unit is suitable for both industrial environments and smart home systems.

Power supply and standards compliance

Power is supplied via 12–24V DC using a screw terminal connection, allowing simple integration into existing control cabinets. The device complies with standards EN 61000-6-2 and EN 55032:2015 + A1, ensuring high noise immunity and low emissions for interference-free operation in office and industrial environments.

Robustness and reliability in continuous operation

With its durable design, DIN rail mounting capability, and a five-year manufacturer warranty, the SIP Ring Switch 4xOut is engineered for long-term use in demanding industrial environments. Its stable electronics and precisely timed internal clock ensure consistently reliable operation, even under challenging conditions.

Intelligent VoIP control via network

The Wiesemann & Theis SIP Ring Switch 4xOut defines a new class of control systems that intelligently combine telephony and automation. With four flexible outputs, VoIP compatibility (including Asterisk), an integrated web interface, and comprehensive networking capabilities, this device delivers a unique blend of user convenience, security, and technical precision.

Whether for door access by phone call, timed lighting control, or centralized company access management – the SIP Ring Switch 4xOut enables innovative automation without additional control wiring or complex infrastructure. Its robust concept makes it an indispensable tool for installers, system integrators, and facility managers in the age of digital communication networks.