
Client: Law Enforcement & Public Safety, Uttar Pradesh
Technology Partner: StackIOT Technologies Pvt. Ltd.
Project Type: Radio Over IP (RoIP) Communication System Deployment
Deployment Scope: 81 Locations across Uttar Pradesh
Solution Components: Radio Gateway, RoIP Server, Dispatcher Software
Introduction
Timely response, coordination of incidents and maintenance of visibility of operations state wide is only possible through effective communication between law enforcement and the public safety units. The public safety agencies in the State of Uttar Pradesh have been struggling with the radio network unification of district fragmented set of systems, negligible interoperability and the use of vintage analogue systems. StackIOT technologies Pvt. Ltd. came up to remedy this by planning and deploying an efficient, scalable Radio Over IP (RoIP) based dispatch solution that will allow a seamless, centralized monitoring and communication across the state.
By using the IP backbone (via public IP, VPN or MPLS ) the RoIP system provides interconnection of radio traffic between different districts with a State Control Room. This provides real time engagement with radio users like Police Response Vehicles (PRVs) and District Control Rooms (DCRs and when an individual interactive agent is on the move link can be maintained when there is no opportunity to speak. This gives voice as well as data merger between technologies.
Challenges with the Current System
Before the intervention of StackIOT the current communication arrangement had the following drawbacks:

Unmatched Monitoring:
The inability to monitor different radio networks at one point.

Few dispatch alternatives:
Only to basic voice dispatch, no effective text messaging and multicasting/Broadcasting.

Manual control:
There is no remote control for district radios, any frequency/channel switches or switches of radios.

No Recording or Playback:
Important voice records were unable to be recorded or replayed.

Fragmented Communication:
Fragmented communication, there is no support of cross-district conference calls and integration of SIP/IP phones.

GPS Blind Spots:
There is no system wide GPS tracking or in history of the field radio units.
These limitations lowered the situational awareness and the response time of the emergency services particularly when the mobile network was down in remote places.
Proposed RoIP-Based Solution
StackIOT developed and implemented a large-scale RoIP infrastructure in 81 strategic spots and combining three main elements:

Radio Gateway (Model: ROIP-300Dx)
The gateway was installed over the DCRs, CCCs, and OMCs with the capability of supporting analog and digital (DMR) radios; change of channel, remote control, and redundant connection to enhance reliability.
RoIP advanced digital server
This server was implemented at the Data Center (DC), and Disaster Recovery Center (DRC), and it centralized control of all RoIP devices, serving as its main configuration device and allowing integration of calls into an IP-PBX network, or a SIP network.


Dispatcher Software
This interface was deployed in 108 users fitted with CCCs, OMCs and DCRs, with capability to support real-time monitoring, call control, event messaging, GPS, tracking, and call recording, and playback.
System Structure & Characteristics
Radio Gateway Features:
• Support Radio’s Analog and Digital DMR (All VHF, UHF Networks)
• Voice Calling Analog and Digital
• Remotely Channel Change/ Frequency Selection and Remote Radio Kill/Un-Kill
• Multi-Connection mode to Support Redundant Server
RoIP Server Features:
• Central control and configuration of the devices.
• Voice dispatch and recording including time stamps and caller ID.
• Complete DMR support with GPS tracking and data communication.
• SIP phone integration and business conference call.
• Handling of individual, multicast and broadcast calls.
Dispatcher Software Features:
• Live surveillance of the radio networks of different districts.
• Voice / text paging to single radios or groups.
• Options to record and playback calls in entirety.
• Centralized control of radios remotely.
• DMR radios via real-time and historical GPS tracking.
• Web interface of application to access
Use Case: Event Dispatch in Network-Restricted Environments
One of the fundamental issues of the sector was event dispatching when the Mobile Data Terminal (MDT) or cellular network in the PRV sites went down. This new RoIP system offers smooth fallback:
- Event Generation: Dispatcher records an event and then identifies the closest PRV.
- Access RoIP Dispatch Screen: Customized RoIP interface, the operator can elect the specific district.
- Selection of Radio Channel: Frequency/channel of the PRV is fixed.
- Selective DMR Call: DMR allows the dispatcher to make a voice connection directly to the PRV.
- Two-Way Communication: PRV is even able to respond through an identical secure radio connection.
- Confirmation of events: Dispatcher can also send the DMR text of the private event message to PRV.
This guarantees the ongoing of operations even when there is an outage of a mobile network, thereby increasing the levels of safety and operation efficiency.
Impacts and Benefits

The centralized RoIP dispatch solution has transformed public safety communication in the state of Uttar Pradesh when it was implemented. The major achievements are:
- State wide Unified Communication: Consolidated 81 points to a central infrastructure.
- Improved Interoperability: Analogue vs. DMR IP interoperability of voice and data inter-connectivity.
- Remote Management: They have control over the district radios at central location, and change of frequencies.
- GPS Visibility
- Fail-safe Communication: Back-up of mobile network failure communication system with a reliable back- up, thus no communication blackout.
- Operation efficiency: Shorter response times and increased speed of dispatch of information in the various departments.
Conclusion
StackIOT RoIP based dispatch system has changed the level of radio communication in terms of public safety and law enforcement. The solution can make mission-critical communication reliable in Uttar Pradesh by using the digital gateways, centralized managing, and the monitoring through the GPS support. This implementation is a proof of concept that the existing conventional radio solutions in the public safety sector can be revolutionized I the modern IP based radio systems because of its future-proof scalability and SIP integration.
For further inquiries:
sales@stackiot.tech | www.stackiot.tech | +91-9717284220
