1. Product Introduction

The COMTOM CT-NB1003P is a professional PoE-powered SIP ceiling speaker engineered for modern IP PA (Public Address) systems. As a native SIP endpoint, it integrates directly into any SIP-based IP PA infrastructure without requiring external decoders or amplifiers, delivering 20W rated audio output through a premium 6.5-inch speaker driver. Supporting both SIP (RFC 3261) and IGMP multicast protocols, the CT-NB1003P is the ideal ceiling speaker for multi-zone IP broadcasting in schools, offices, hospitals, hotels, shopping malls, and government buildings. PoE (IEEE 802.3at) power supply eliminates separate cabling, reducing installation complexity and cost in ELV system integration projects.

2. Core Advantages

The CT-NB1003P delivers a rated 20W output power at 8Ω — more than double the power of comparable Grandstream SIP ceiling speakers (8–15W) at a fraction of the cost. With a frequency response of 100Hz–18KHz (±3dB) and SNR ≥75dB, it reproduces clear voice announcements and high-fidelity background music. Its dual power supply option (PoE IEEE 802.3at or DC 24V/2A external adapter) provides maximum installation flexibility. IGMP multicast support enables efficient simultaneous broadcasting to thousands of zones without increasing network bandwidth — essential for large campus, hospital, and commercial complex IP PA deployments. CE, RoHS, and FCC certified for global compliance.

3. Application Scenarios

The CT-NB1003P is specifically designed for IP PA system deployments across Belt & Road markets. In schools and universities, it serves as the primary IP broadcasting endpoint for morning announcements, class bell systems, and emergency notifications. In hospitals and healthcare facilities, it delivers patient paging, department announcements, and emergency voice alerts. Office buildings and corporate campuses use it for zone-based background music and executive paging. Hotels deploy it in lobbies, corridors, and guest room areas for BGM and general announcements. Shopping malls and retail complexes use it for zone-specific promotional broadcasts. Government buildings and public facilities deploy it for general information and emergency broadcast systems. Ideal for system integrators and ELV contractors in Saudi Arabia, Indonesia, Malaysia, Philippines, UAE, and Vietnam.

4. System Compatibility

The CT-NB1003P operates as a standard SIP endpoint, registering directly with any SIP-based IP PBX or IP PA server including Asterisk, FreePBX, 3CX, and COMTOM's own IP PA system servers. IGMP multicast mode allows the speaker to receive broadcast streams without SIP registration, ideal for pure paging deployments. PoE compatibility ensures plug-and-play integration with any IEEE 802.3at PoE switch. The speaker can be managed and configured through a standard web interface, enabling remote zone management and volume control by building administrators. Fully compatible with COMTOM 6-zone and 10-zone PA controllers for complete end-to-end IP PA system solutions.