CPE40

An 8-microphone array for room-wide pickup

The Yealink CPE40 is a conference omnidirectional microphone that uses an 8-element array to capture voices from 360 degrees, with a pickup distance of 6 metres. Its microphone response runs from 100 Hz to 12 kHz, sampled at 48 kHz with 16-bit depth, and it is rated at a signal-to-noise ratio of 71.8 dB. It is built for video conferencing, where every participant needs to be heard at a steady level without leaning toward a device.

A built-in 4 W speaker covers 100 Hz to 20 kHz with a 120° emission angle at 2 kHz, so remote callers can be heard clearly across the room as well as picked up from it.

Audio processing that works on the room itself

Second-generation AI audio processing targets the problems that spoil conference calls: background noise, echo and reverberation. The manufacturer lists air conditioning vibration and keyboard typing among the noises the unit is designed to remove, which is useful in Qatar, where air conditioning runs for much of the year. Full-duplex operation lets both sides speak at the same time, and automatic gain control keeps softer voices audible.

Three physical buttons for mute, volume up and volume down sync with the meeting software, so the host can mute the room from the table. The mute LED shows solid red when muted, while other LED states indicate an incoming call, an active call, a restart or an upgrade in progress.

Daisy-chaining one room or several on a single cable

When paired with the Yealink CP50, the CPE40 connects over a single PoE network cable, and up to eight units can be daisy-chained to cover long tables and divided rooms. Units link through their codec and audio ports. The manufacturer notes that a 48V 2A power adapter is also required once four or more CPE40 units are chained to one CP50. Each unit has an average power consumption of 6 W.

Where the CPE40 fits in Qatar

• A ministry boardroom in West Bay: a long table where a single central unit covers the seats within 6 metres, with a second unit chained for the far end.
• A training room in Education City: a university seminar room where lecturers and visiting speakers need consistent pickup and clear two-way audio for hybrid sessions with colleagues abroad.
• A school hall in Al Wakrah: a multi-room fit-out where several chained units cover a large space while the cabling stays neat and organised.

What to plan before you order

• Check the room climate. The operating range is 0 to 40°C with 10 to 95% humidity, non-condensing. Keep units in air-conditioned rooms, away from direct sun and window glare, because summer temperatures in Qatar can exceed 45°C.
• Measure the table layout. Each unit measures 151.8 × 151.8 × 75.3 mm, and the package includes a 3 m Ethernet cable, so confirm the cable run from the CP50 to the furthest position.
• Check the Zoom Rooms and Microsoft Teams Rooms accessory compatibility lists against your platform and version before ordering.
• Budget for the 48V 2A power adapter when chaining four or more units.
• Note that the Type-C port is for internal debugging only and has no external function at present.

Products are covered by the manufacturer's warranty. SmartRooms Qatar offers free site surveys, professional installation and delivery to all eight municipalities of Qatar. Request a quote and we will confirm the cabling, power and chaining plan for your room.