Roadside Emergency Telephone

 

The SC-WR03 Roadside Emergency Telephone is designed for reliable voice communication in outdoor, roadside, tunnel, and industrial environments where equipment may be exposed to noise, dust, moisture, and changing temperatures.

It is suitable for highways, tunnels, power stations, steel plants, oil and gas fields, docks, residential communities, schools, and large industrial workshops. The unit supports SIP, analog, and direct fiber optic communication, giving project contractors more flexibility when connecting the telephone to existing emergency communication infrastructure.

With an IP65 weather-resistant enclosure, wall-mounted design, two dedicated emergency buttons, and multiple power supply options, the SC-WR03 is intended for locations where users need quick access to a control center, monitoring station, or emergency service.

 

 

1. The roadside emergency telephone is constructed from advanced composite materials, providing a strong and durable housing for demanding outdoor and industrial installations.
2. Rated to IP65, the enclosure provides protection against dust, water ingress, humidity, and low-temperature conditions.
3. Supports multiple communication modes, including SIP protocol, traditional analog signaling, and direct fiber optic connections.
4. Several preprogrammed speed-dial numbers can be stored for rapid connection to emergency services, control rooms, or monitoring centers.
5. Supports automatic ring detection and auto-answer functionality. The integrated loudspeaker also allows hands-free communication when required.
6. Built-in busy tone detection automatically terminates completed calls, helping improve line availability.
7. Visual indicators show incoming call status and the current operating state of the telephone.
8. Multiple power supply options are available, including PoE, 12V, 24V, and 220V, depending on the selected configuration.
9. Supports VoIP communication based on standard SIP network protocols for integration with modern IP telephone systems.

 

 

Size 260*254*140MM Weight 6KG Shell material Composite new material Keyboard material silicone color Red, yellow (optional) Communication mode SIP protocol, analog, and direct fiber optic Installation method Wall-mounted Power supply 220V power supply (POE and DC are optional) Protection level IP65 Operating temperature -20℃ to +50℃

 

The SC-WR03 can be configured according to the communication infrastructure already available at the installation site.

For modern highway, tunnel, and industrial communication systems, the SIP version can connect to compatible VoIP platforms and IP networks.

For projects using traditional telephone infrastructure, an analog configuration is available.

A direct fiber optic connection can also be selected for projects requiring long-distance transmission or integration with existing fiber networks.

This allows the same roadside emergency telephone platform to be adapted to different engineering and communication environments.

 

 

Network Support SIP V1 (RFC2543), V2 (RFC3261) protocol Support backup server Supports proxy servers and peer-to-peer connection modes Support stationary IP / DHCP / PPPoE dialing Support TFTP / DHCP / PPPoE client side Support Telnet / HTTP / HTTPS services Support network time SNTP protocol Support DNS SRV (RFC3263)

Audio The device supports wideband, high-definition voice encoding technologies such as L16G and G.722, delivering clearer and more natural audio quality compared to conventional narrowband voice transmission. It is compatible with a broad range of standard audio codecs, including G.711 A-law and μ-law, G.726, G.729A/B, G.723, and iLBC, enabling flexible deployment across different communication networks and ensuring interoperability with existing telephony systems. Voice Activity Detection (VAD) is supported to intelligently identify periods of silence, helping to reduce unnecessary bandwidth usage during calls. Comfort Noise Generation (CNG) is integrated to provide a natural background sound during silent intervals, improving the overall listening experience and preventing abrupt audio dropouts. The system incorporates Automatic Jitter Buffer (AJB) technology to compensate for network delay variations, ensuring smoother and more stable voice transmission over IP networks. Advanced Acoustic Echo Cancellation (AEC) is employed to minimize echo effects in hands-free communication scenarios, enhancing call clarity in noisy or reflective environments. Automatic Gain Control (AGC) continuously adjusts audio levels to maintain consistent volume, ensuring clear communication regardless of variations in speaking distance or background noise levels.

Special Features Supports quick IP reporting through a single operation: press and hold the hands-free key for approximately ten seconds and release to trigger automatic IP reporting, or lift the handset and dial **9114 to complete the process. The telephone supports registration of up to five SIP accounts. If the primary account is unavailable, the system automatically switches to an alternate account to maintain uninterrupted communication. The unit is fitted with two dedicated emergency buttons for rapid access to emergency calling functions.

 

The SC-WR03 is particularly suitable for fixed emergency communication points where mobile phones may not be the most reliable or practical option.

Typical installations include highway emergency points, road tunnels, service areas, bridge facilities, parking areas, industrial access roads, power plants, docks, and remote infrastructure sites.

In highway and tunnel projects, the telephone can be installed at designated intervals and connected to a central control room, allowing users to request help quickly in the event of a vehicle breakdown, accident, equipment failure, or other emergency.

 

 

Roadside emergency equipment needs to be easy to recognize, simple to operate, and compatible with the communication network already used by the project.

The SC-WR03 combines a wall-mounted IP65 enclosure with multiple communication options, two emergency buttons, automatic answering, hands-free communication, and flexible power supply choices.

This makes it suitable for both new installations and retrofit projects where existing analog, IP, or fiber infrastructure may already be in place.

 

 

 

 

 

For roadside, highway, or tunnel projects, it is helpful to provide the following information when requesting a quotation:

• Required communication type: SIP, analog, or fiber optic
• Available power supply
• Installation environment
• Required quantity
• Distance between telephone points and the control center
• Any button, color, or system integration requirements

Providing these details helps determine the most suitable SC-WR03 configuration for the project.

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