CM50

What the CM50 picks up and how its pickup zones work

The Yealink CM50 is a ceiling microphone built around a 127-unit MEMS array with beamforming. It covers a 5-meter radius and supports up to eight customizable pickup zones, so the system can focus on the lectern, the table seats or a presenter's position rather than the whole ceiling. Prioritised pickup and an acoustic fence help exclude sound from outside the chosen areas, such as air conditioning noise or a corridor next door.

Its frequency response runs from 120 Hz to 20 kHz, with a signal-to-noise ratio of 86 dB and a maximum sound pressure level of 122 dB at under 1% THD. In practice, quiet discussion and raised voices are both captured without distortion, which matters when a presenter stands at the front while remote participants speak from the far end of a table.

Audio processing and network features that matter

AI-based sound optimization combines noise reduction with reverberation and echo cancellation, and AI feedback suppression helps prevent howl when the room is amplified. The CM50 supports Dante and AES67, offering 8+2 Dante output channels and 2 Dante input channels at 48 kHz and 24-bit. Two of those inputs carry the echo cancellation (AEC) and feedback control (AFC) references. Dante media encryption and Yealink audio encryption both use AES-256, a point that IT teams in government and banking often raise early.

In Microsoft Teams rooms, the CM50 supports automatic EQ switching and mute synchronization, and its sound source localization can drive camera tracking with compatible Yealink room systems. The datasheet also lists support for Cisco Webex and Zoom systems that connect over Dante, AES67, USB or analog. A 3-pin Phoenix connector provides analog output.

Where the CM50 fits in Qatar

• Boardroom in West Bay: a ceiling microphone keeps the table clear while remote colleagues in other offices hear every speaker.
• Lecture hall in Education City: pickup zones aimed at the lectern and front rows reduce amplification of side noise.
• Hybrid training room in Lusail or the Industrial Area: in-room trainees and participants joining from Microsoft Teams or Zoom share one audio pickup.

These are typical fits, and the right number of units depends on room length and layout.

Planning the installation: ceiling, power and room design

The unit measures 592 × 592 × 56 mm and weighs 5.15 kg without accessories. It is designed to replace a ceiling tile in standard 60 × 60 cm grids, which avoids drilling, and suspension or adhesive mounting accessories are included. It needs a single IEEE PoE+ connection (802.3at class 4), with a rated power of 19.3 W and typical consumption of 17 W. Check the switch port budget before installation. Intelligent Design and Deployment features require the Yealink Audio Processor and Room Designer software to be fully operational.

The CM50 is plenum rated to UL 2043 for air handling spaces. Its operating range is 0 to 40 °C and 0 to 93% RH, and storage is rated from -30 to 70 °C. Qatar summers regularly pass 45 °C, so confirm that the room is air-conditioned and that the ceiling void stays inside the operating range, especially near roof spaces or external walls.

Before ordering, ask SmartRooms Qatar for a free site survey to check the ceiling grid, cable route and room acoustics. Request a quote with your room size, ceiling type and conferencing platform, and we will return a quotation usually within one working day. Purchase orders (LPOs) and government tenders are welcome, and the team can advise on the right setup for your room.