EPABX/Intercom

EPABX solutions form the foundation of efficient telecommunications within organizations, offering a centralized way to manage both internal and external voice communications. By integrating multiple telephone extensions into a single system, EPABX reduces the need for separate lines for each user, saving costs and simplifying management. These systems are essential in corporate offices, hotels, hospitals, educational campuses, and industrial facilities, where seamless communication and call-handling efficiency are critical.

At their core, EPABX systems act as an intelligent switchboard. When someone places a call, the system routes it via internal lines or out to the public network, enabling easy transfers between extensions, call forwarding based on availability, voicemail access, hold queues, recorded greetings, and conference calls. Employees can transfer callers to departments or individuals without delays or missed connections, ensuring productive workflows.

Advancements in VoIP technology have propelled modern EPABX systems into the digital age. Internet-based or IP-enabled EPABX platforms now support high-quality voice communications over local networks or the internet, enabling seamless remote access. Staff working from another office, home, or in the field can use IP desk phones or softphone apps to connect as if they were on-site. Features such as simultaneous ringing across desk phones, mobile devices, and softphones simplify availability management. VoIP EPABX solutions also bring advanced analytics, automation, and integration with CRM or help desk systems, improving customer interactions and response times.

At Unisol, each EPABX deployment is tailored to meet client needs. We evaluate current call volumes, department structures, remote worker requirements, mobility needs, and integration goals. Whether the solution is cloud-hosted or on-premises, we design systems that scale from small teams to large enterprises with hundreds or thousands of extensions. We map out auto-attendant greetings, queue handling, departmental routing, and after-hours voicemail so that callers always reach the right person. Call logs, usage charts, and performance reports enable managers to monitor system load, optimize staffing, and adjust configuration over time.

An intercom system serves as the perfect companion to EPABX, offering localized, immediate communication across different points within a building or campus. Audio intercoms allow simple voice conversations through entry panels, door stations, or room-to-room setups—making visitor screening, internal assistance, and emergency coordination fast and reliable. Video intercoms enhance this further by adding visual verification, enabling users to see callers before granting access. This feature is particularly vital in gated communities, corporate receptions, hospitals, and schools, where identifying visitors is paramount.

Modern intercoms also offer IP-enabled integration. Linked to the existing network, an intercom call or video feed can appear on softphones, mobile apps, receptionist consoles, or security stations. Admins can unlock gates, transfer calls, or direct visitors—all through a unified interface. Such systems also link with access control and CCTV, triggering audio announcements, recording video snapshots, or generating visitor logs automatically.

When EPABX and intercom systems are integrated, the result is a truly connected communication environment. An EPABX deployment can seamlessly receive intercom calls routed to specific extensions or user groups. Imagine a visitor pressing a gate intercom button: the system can ring reception, broadcast to security, or alert team members—all while starting a video feed, recording the interaction, and logging the event for review.

If during a busy period, calls are missed, intercom alerts can queue and forward notifications via app or SMS. In case of alarms—such as gate tampering or emergency door access—intercom stations can trigger designated extension rings or broadcast announcements across extensions. All of this activity is logged automatically within the unified system, simplifying audits and tracing.

The benefits of EPABX and intercom integration are profound. Centralizing communication eliminates redundant hardware and service plans. With VoIP, internal and external calls are consolidated and routed efficiently, reducing telecom costs while increasing flexibility. Users gain seamless mobility through softphones and mobile apps, ensuring that they remain accessible even when away from their desks.

Auto-attendants and department-specific menus elevate customer handling by directing callers swiftly to appropriate teams. Combining this with video intercoms and access control enhances security, allowing buildings to restrict entry and screen visitors effectively. High-traffic lobbies, gated policemen’s booths, and complex multi-building campuses all become easier to manage.

Scalability remains a key advantage: adding extensions or intercom stations, scaling from ten to a thousand phones, or expanding to multiple office buildings can all be achieved flexibly with minimal infrastructure changes. Hosted models allow clients to turn on new lines in minutes with no hardware updates required.

Beyond voice and video, integrated systems support comprehensive visitor workflows. Visiting guests can call in and verify identities through video intercom and then send an unlock command—all tracked by the EPABX log. Technicians can call service desks from gate panels; nurses can coordinate within clinics without leaving their stations. Departments such as security, HR, and operations gain control and visibility.

For instance, IP intercom units placed near emergency exits can be programmed to notify multiple lines and trigger lockdown protocols or alarm systems when activated. EPABX systems with call recording can capture such events for later forensic analysis or compliance purposes.

Security remains a key consideration. Data and voice signals are encrypted with TLS/SRTP standards, minimizing interception risk. All system actions—from incoming calls and visitor entries to alarm triggers—are timestamped and saved for audit. Intercom video feeds can be set to discard automatically after a set retention period to comply with privacy regulations. The whole ecosystem supports GDPR, HIPAA, and other policies, giving clients peace of mind.

Advantages extend to remote assistance as well. Field personnel using mobile intercom or app-enabled access control can call central offices or technicians directly through the system, boosting maintenance response times and support coordination. For example, an on-site elevator technician can initiate a live call with the help desk via intercom, sharing real-time video or voice instructions. This level of connectivity improves operational efficiency and reduces unnecessary travel or delays.

At Unisol, we work with advanced hardware—IP desk phones, SIP trunks, video intercom stations, biometric door readers, and integrated access control panels. We plan failover architectures, bandwidth prioritization, QoS controls, and network security protocols to guarantee high uptime. Our engineers configure VLANs and encryption to segregate traffic flows and prevent unauthorized access.

Training ensures that staff can operate the system intuitively, manage call routing, adjust auto-attendants, assign visitor rights, and generate reports quickly. Technical support includes scheduled firmware updates, system health alerts, usage monitoring, and troubleshooting services. Our maintenance packages include remote diagnostics and on-site support if hardware issues arise.

Access logs, call statistics, and system alerts are stored for trend analysis and network optimization. Finally, as customer needs evolve, so do EPABX and intercom technologies. AI-based auto-attendants can now interpret voice responses and dynamically route calls to suitable agents. Mobile credentials and browser-based intercom apps support door opening from afar.

Cloud redundancy options minimize downtime. Unified communication suites now link voice, video, chat, presence, and conferencing under a single platform—fully compatible with remote or hybrid work models. By integrating EPABX and intercom systems, organizations unlock a unified, secure, and versatile communication infrastructure.

Whether for internal coordination, visitor verification, emergency response, or remote support, clients benefit from clarity, convenience, and connectivity. At Unisol, our integrated solutions bring synergy to your operations, combining advanced telephony, smart intercom, and comprehensive access control into a future-ready communication platform.