Public Address System Installation in Kolkata and Across India
A public address system (also called a public announcement system) is an audio setup of microphones, amplifiers and speakers that sends live or recorded announcements to one or many zones. Trustnet designs and installs analog and IP PA systems for schools, factories, offices, hospitals and malls in Kolkata and across India.
Public address systems built for buildings of every size.
Trustnet Consultancy designs, supplies, and installs public address systems for corporate offices, schools, factories, malls, and public buildings across Kolkata and India. Whether you need a simple public announcement system for a single floor or a fully zoned IP PA system spanning an entire campus, we build it around how your organisation actually communicates day to day.
Our public address systems combine wired and wireless microphones, ceiling and wall-mounted speakers, and centralized control panels — so announcements, emergency alerts, and background audio can all be managed from one point. For larger sites, our IP-based PA systems let you address individual zones or floors independently, without running new cabling through every wall of the building.
Every installation is designed around your building's layout and acoustics first, then built with equipment that's easy for your own staff to operate day-to-day — no specialist training required. We also provide ongoing maintenance and support, so your public address system stays reliable for emergency notifications as well as everyday announcements, for years after installation is complete.
Every announcement, every zone, one system.
Every element below can be deployed standalone or bundled — designed, installed, and supported by the same Trustnet team.
PA System Design & Planning
Layout & acousticsCustom-designed PA layouts based on your building's size, acoustics, and daily communication needs.
contact-usWired & Wireless Microphones
Announcement hardwareHandheld, podium, and wireless microphone systems for reception desks, offices, and event spaces.
contact-usEmergency Notification Systems
Safety & alertsInstant, building-wide alerts for fire, safety, and emergency situations — audible in every zone.
contact-usIP PA System Integration
Network-based audioZone-based, network-connected PA systems that scale across floors and buildings without new cabling.
contact-usZone-Based Audio Control
Targeted announcementsAddress a single floor, department, or the entire building — independently or all at once.
contact-usAMC & Maintenance Support
Ongoing reliabilityScheduled maintenance and rapid-response support, so your PA system is ready when you need it.
contact-usBuilt for every building type, from single offices to campuses.
Four reasons facilities and safety teams across India choose Trustnet for PA system projects.
Built for every building type
From single offices to multi-floor campuses — we scale the system to your space.
One team, start to finish
Design, supply, installation, and AMC — handled by the same team throughout.
Kolkata-based, on-site
On-ground installation and support teams based in Kolkata, working across India.
Reliable in emergencies
Systems designed and tested for clear, dependable emergency notification.
About IP PA Systems
IP PA (Public Address) systems use a computer network to deliver live announcements, voice messages, and audio across different areas of a building. They allow you to manage speakers in separate rooms, floors, or buildings from one central location. These systems are ideal for offices, schools, hospitals, factories, shopping malls, and large campuses. You can make announcements to the entire building or select specific zones as needed. IP PA systems can also work with security and emergency alert systems to share important messages quickly. They are easy to expand as your business grows, making them a practical choice for modern communication needs.
Types of public address systems
Choose the right PA system for your space, from everyday announcements to network-based audio and emergency voice alerts.
Analog (70V/100V Line) Systems
Ideal for offices, schools, and malls that need clear announcements through speakers across multiple rooms or floors.
IP PA Systems
Connect speakers through your network to make announcements across different floors, departments, or buildings.
Portable/Wireless PA
Easy to move and set up for meetings, events, and outdoor spaces where fixed speakers are not practical.
Emergency Voice-Alarm Integration
Connect with fire alarm systems to play clear evacuation messages and help people leave the building safely.
Public Address System FAQs
Where We Install PA Systems
From classrooms to large commercial spaces — we provide PA solutions for clear communication across every environment.
Schools and Colleges
Clear announcements for assemblies, class schedules, and important campus updates.
Factories and Warehouses
Reliable communication for shift updates, daily operations, and workplace safety alerts.
Offices and Campuses
Easy communication across departments, office floors, and multiple buildings.
Hospitals, Malls and Hotels
Clear visitor announcements, service updates, and emergency messages across public areas.
Trusted by Leading Organisations Across India
Ready to upgrade your building's PA system?
Get a free site assessment and a no-obligation quote today.
Get a Free PA Quote