IP PBX System (500 Users, 75 Concurrent Calls, Built-In Conference Bridge, HA)

Key Features

• 500 SIP Extension Capacity: Supports up to 500 simultaneous SIP registered extensions — IP desk phones, softphones, mobile apps, and analogue phone adapters all register as standard SIP endpoints
• 75 Concurrent Calls: Handles 75 simultaneous active calls (incoming, outgoing, and internal) without degradation — appropriate for a 500-user organisation with typical 15% concurrent call ratio during peak hours
• 100 SIP Trunk Channels: 100 simultaneous SIP trunk channels to the PSTN/BTCL or to a cloud SIP provider — separating trunk capacity from extension count provides full flexibility for organisations with high outbound call volume relative to user count
• 64-Party Conference Bridge: Built-in audio conferencing for up to 64 simultaneous participants — no separate conferencing service subscription required; participants join by dialling an internal extension with a PIN code
• Built-In Call Recording — Up to 4TB Storage: Server-side call recording captures all or selected calls to an internal storage volume (up to 4TB); recordings are searchable by date, extension, duration, and direction with role-based access control for compliance with PDPO 2025 data handling requirements
• Multi-Level IVR with Custom Prompts: Interactive voice response menus with unlimited levels and custom audio prompt recording — professional auto-attendant for all incoming calls with time-based routing (business hours, after hours, holidays)
• Mobile App (iOS/Android): Native mobile application extends the user's desk extension to their smartphone — calls to the extension ring simultaneously on desk phone and mobile; external calls appear with the office caller ID; eliminates the need for a separate mobile number for business calls
• High Availability — Active/Standby Failover: Dual-server HA configuration with real-time database replication between active and standby servers; if the active server fails, the standby takes over in under 30 seconds with no extension re-registration required — critical for organisations where communications failure has direct operational consequences
• SIP-TLS + SRTP Encryption: All SIP signalling is encrypted with TLS and all media streams are encrypted with SRTP — prevents call interception and eavesdropping on the enterprise network and over internet SIP trunks; meets Bangladesh Bank ICT Guideline v4.0 requirements for encrypted communications
• Virtualisation Support: Available as a virtual appliance for VMware ESXi and Microsoft Hyper-V — runs on existing virtualisation infrastructure without dedicated physical server hardware
• Redundant PSU (Hardware Version): Physical server version includes redundant hot-swap power supplies for hardware fault tolerance

Technical Specifications

Typical Applications

• Commercial Bank — Head Office + Multi-Branch: Central IP PBX at head office with SIP trunks; branch offices connect via site-to-site VPN and register extensions to the same central PBX — all internal calls (head office to branch) are free; mobile app extends the bank's communications to relationship managers in the field
• Hospital — Clinical Communications: 500 extensions cover the full staff roster of a mid-size hospital; ring groups route incoming patient calls to ward staff by department; IVR provides department-specific routing for outpatient appointments, lab results, and emergency enquiries
• Government Ministry — Internal PSTN Replacement: IP PBX replaces aging analogue PABX across all ministry floors; SIP trunks to BTCL replace legacy E1/ISDN lines at lower monthly line rental cost; call recording of all extension calls meets government accountability requirements
• Corporate Headquarters — Multi-Site Enterprise: Single IP PBX platform serves all Bangladesh offices (Dhaka, Chittagong, Sylhet, Rajshahi) over site-to-site VPN; consolidated call recording and CDR reporting; Microsoft Teams Direct Routing integration for unified communications experience
• Hotel — Guest Room and Back-Office Telephony: 500 extensions accommodate a full mid-size hotel's guest rooms (analogue phone adapters), reception (IP phones), back-office staff (IP phones), and management (mobile app)
• University Campus — Administration and Faculty: Faculty offices, student services, security control room, and administration all connected on the same platform; call recording of student services enquiries for quality management

Compatibility & Integration

SSAL's IP PBX platform integrates with Yealink, Grandstream, and Snom IP desk phones as primary certified endpoints. Analogue legacy handsets connect via FXS gateway adapters — preserving investment in existing handsets during transition. Microsoft Teams Direct Routing integration (SBC gateway) enables organisations to use Teams as the calling interface while routing calls through the IP PBX for local PSTN connectivity. CRM integration (Salesforce, Zoho) provides click-to-dial and call logging directly within the CRM interface.

SSAL Supply & Support

Smart Safety & Automations Ltd. designs, supplies, installs, and maintains IP PBX systems as complete unified communications projects. SSAL's delivery includes dial plan design, IVR recording and configuration, extension provisioning, SIP trunk testing, HA failover testing, and user training. A post-commissioning 30-day support period is included in all new IP PBX projects. Annual Maintenance Contracts cover firmware updates, call recording storage management, performance monitoring, and 24/7 P1 fault response.

Request a Quote

Replace your PABX with a platform that grows with your business. Contact SSAL today.

• Web: www.smartsafety.com.bd
• Email: info@smartsafety.com.bd
• Phone: +880-XXXX-XXXXXX
• Request a Quote: www.smartsafety.com.bd/quote