Product Overview

The Poly IP table microphone (874R3AA) is a wired tabletop expansion microphone that extends voice pickup for Poly room systems in medium and large conference rooms. Three uni-directional cardioid elements give 360-degree table coverage with a pickup range of up to 8.2 ft per microphone, and the unit ships with a 25 ft shielded CAT 5E cable so it can reach from the table to a floor box or wall plate without a custom pull. It connects to the link-local network ports on a Poly G7500 codec, Poly Studio G62 or Poly Studio X72, which accept any combination of up to three IP Table or IP Ceiling microphones. Because it is wired, there are no batteries to manage and no wireless coordination to plan for in a dense office.

Product Description

This microphone solves a specific problem: a room whose codec-mounted array covers the near end of the table but leaves participants at the far end sounding distant. Each unit contributes three cardioid elements arranged for 360-degree coverage, with a stated pickup range of up to 2.5 m (8.2 ft) per microphone, so placement rather than gain is what determines intelligibility. In practice that means positioning one microphone per seating cluster along the table instead of trying to cover the whole room from a single point. Sensitivity is -40 dB (V/Pa) with a signal-to-noise ratio above 70 dB, and the enclosure measures 4.7 x 5.4 x 1.0 in and weighs 0.45 lb, which is low enough to sit unobtrusively on a boardroom table.

Cabling and host compatibility are the two items to settle before ordering. The microphone terminates in RJ-45 and ships with a 7.6 m (25 ft) shielded CAT 5E cable, which is usually enough to reach a table grommet, floor box or credenza on a standard conference table; longer runs should be planned as part of the furniture and floor-box design rather than improvised with a coupler. On the host side, Poly’s VideoOS compatibility guide lists the IP Table Microphone as supported on the Poly G7500 codec, the Poly Studio G62 and the Studio X72, and as not supported on the Studio X70, X52, X50 and X30 video bars those bars use their own USB table microphone accessory instead. Confirm the guide for your VideoOS release before finalizing a bill of materials.

The microphones are not daisy-chained end to end; each one runs back to a link-local network (LLN) port on the room system, and Poly’s documentation notes that a PoE injector or PoE switch supplies power to them. A supported system accepts up to three microphones in total, and that budget is shared with ceiling units so a room can run three table microphones, three Poly IP ceiling microphone arrays, or any mix of the two up to three. Table microphones are the lower-cost, faster install of the pair and sit closer to the talker; ceiling arrays keep the table surface clear where furniture moves or the room is client-facing.

Key Features

• Three Cardioid Elements Uni-directional cardioid microphones arranged for 360-degree table coverage favor the person speaking over general room noise.
• 8.2 ft Pickup per Microphone A stated range of up to 2.5 m per unit sets clear placement guidance: one microphone per seating cluster along a long table.
• 25 ft Shielded Cable Included The supplied 7.6 m shielded CAT 5E cable reaches a table grommet, floor box or credenza without a custom pull.
• Up to Three Microphones per System A supported room system accepts any combination of up to three IP Table or IP Ceiling microphones through its link-local network ports.
• Wired Operation No batteries to change and no wireless channel coordination, which suits dense office floors and rooms with strict IT policy.
• -40 dB Sensitivity, Greater Than 70 dB SNR Published audio performance figures let an AV designer verify the microphone against the room’s noise floor.
• Low-Profile Enclosure At 4.7 x 5.4 x 1.0 in and 0.45 lb, the unit sits on a boardroom table without blocking sightlines across it.
• RJ-45 Termination A standard connector simplifies furniture terminations and lets integrators dress the run through existing table cable management.

Typical Applications

• Boardroom
• Conference room
• Training room
• Multi-purpose room
• Commercial meeting space
• Government space
• All-hands room

Technical Specifications

Frequently Asked Questions

Which Poly endpoints does this microphone extend?
Poly’s VideoOS compatibility guide lists the IP Table Microphone as supported on the Poly G7500 codec, the Poly Studio G62 and the Studio X72. It is listed as not supported on the Studio X70, X52, X50 and X30 video bars, which use a separate USB table microphone accessory. Verify against the guide for your VideoOS release before ordering.

How long is the included cable, and can I run it further?
A 7.6 m (25 ft) shielded CAT 5E cable is supplied and terminates in RJ-45, which covers a typical run from the table to a floor box or credenza. Longer runs should be designed into the furniture and floor-box layout rather than extended with couplers, so the shielding and termination quality stay consistent.

Can the microphones be daisy-chained?
No. Each microphone runs back to a link-local network (LLN) port on the room system rather than chaining unit to unit. A supported system accepts up to three microphones in total.

Can I mix table and ceiling microphones in the same room?
Yes. The three-microphone limit is shared: a room can run three IP table microphones, three IP ceiling arrays, or any combination of the two totalling three on one supported system.

How is the microphone powered?
Poly’s documentation notes that a PoE injector or PoE switch supplies power to the IP microphones, so allocate a powered port per microphone when designing the room’s network and rack.

How many microphones does a boardroom actually need?
Work from the 8.2 ft per-microphone pickup range and place one unit per seating cluster along the table. A room with eight to ten seats around a single table typically takes one or two; a long boardroom table usually takes two or three.

Why choose a wired microphone over a wireless one?
There are no batteries to charge or replace, no wireless channels to coordinate on a dense office floor, and no RF approval to negotiate with IT or with facilities in a government space. The trade-off is that the cable path has to be designed into the table.

What warranty and support are included?
The microphone carries the Poly standard one-year limited warranty. Poly+ service agreements are available separately for extended coverage and advance hardware replacement; contact Creation Networks for the right coverage tier and for help confirming host compatibility before you order.