VoIP Amplifier

The Sadra public announcement system is a modern, future-proof and flexible usable announcement system. The system is provided to warn and inform maintenance and service staff and give instruction to people in critical situations.
The Tunnel Public Address System enables the following announcement ways:
• Publishing of voice messages via the “Desktop VOIP Stream Station” in tunnel, parking or control rooms
• Publishing of pre-record voice messages
To announce important messages to the passengers or maintenance staff, public address system can take place out either live by the operator or via pre-recorded messages from the Main station.
Embedded web pages held within each VOIP Power Amplifier can be accessed over a network using a browser, such as Internet Explorer, to view, monitor, and change settings within the unit.

The amplifiers are used to amplify signal to loudspeakers. The amplifier is mountable in the 2/4U rack.
Main Features
• Rack-mounted/ Panel mounted
• Web Page Configuration
• Real-time Alarm Reporting Via Modbus TCP protocol
• 220 VAC
• 120~350 W
• SIP Compatible
• Modbus TCP protocol compatible
• IP based
• Playing predefined sounds
• Stable solution

Description

Technical Specification

Main specifications
  • Manufacturer: SADRA
  • Mounting :Rack mounted / Panel mounted
  • Power supply: 220 VAC
  • Network: 10/100 Based Ethernet RJ45
  • Output power: 120~350 W
  • Protocol: SIP(RFC3261) protocol
  • Working temperature: from -15°C to +55°C.
  • Control Interface: Modbus TCP protocol for control system and SCADA monitoring and commanding.
  • Controls:
    • Web: VoIP setting, Speaker volume, IP add. Setting, reset factory, reboot and …
    • SCADA: applying commands via Modbus protocol to play predefined sounds in case of emergency or special
  • circumstances
    • Configuration: Embedded web panel
  • SCADA protocol: Modbus TCP
Reporting
  • Sending its current status to control system and SCADA via Modbus TCP protocol
    • Overall Status
    • Broadcasting status
Commands
  • Applying command from control system and SCADA via Modbus TCP protocol in different circumstances to play predefined messages

Related products

  • ITS

    Automatic Incident Detection (AID)

    SADRA–AID is a complete and professional server–based solution for Automatic Incident Detection and Traffic Data Collection. It allows reliable detection of incidents and anomalies in traffic flow on critical infrastructures such as highways, tunnels and intersections.

    Main purpose of Automatic Video Incident Detection System is to increase safety on the road. With hundreds of cameras …

  • ITS

    Desktop Public Address Station (VoIP)

    General

    The VoIP public announcement system is a modern, future-proof and flexible usable announcement system. The system is provided to warn and inform maintenance and service staff and give instruction to people in critical situations.

    To announce important messages to the passengers or maintenance staff, public address system can take place out live by the operator from the Main …

  • ITS

    Emergency Road-side Telephone (VoIP)

    SADRA Hands-free VoIP Flush/wall mount Telephones are designed to provide direct point-to-point communications between people throughout a facility over an existing internet protocol LAN. The VoIP telephones are intended for connection to a 10/100 Based Ethernet and operate using POE+ or an alternative power source.

    The VoIP telephone features real-time Modbus alarm reporting that enables system supervisors to monitor …