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Conference phones and room audio

Choose by room acoustics, participant placement and meeting workflow.

Reviewed 2026-10-11Foundational

Start with the room

Record room dimensions, seating, reflective surfaces, ventilation noise and where remote participants' audio will play. A desk speakerphone that works for two people nearby may not capture everyone at a long table intelligibly.

Define the meeting path

Decide whether the room places ordinary SIP calls, joins a specific meeting platform or acts as a USB audio device for a laptop. These are different deployment modes. Confirm the exact supported integration and whether a user must bring another device to join a meeting.

Pilot with remote listeners

Ask a remote participant to assess speech from each seat, quiet speakers and two people speaking in quick succession. Check echo, clipping, mute indication and volume controls. Manufacturer microphone-range figures are a starting point for this test, not a guarantee in your acoustic environment.

Avoid using several unrelated loudspeakers and microphones in the same call without an intentional echo-control design.

Account for the whole installation

Include expansion microphones, cables, power, mounting and management. Assign a room owner who can report faults and restore a known configuration. Compare the room solution with the broader conference-room planning guide. Product-family support must be verified by model and firmware before buying.

Keep bridge, control and BYOD modes distinct

A current room endpoint may support its own SIP conference, an application that controls another room system and an audio connection for an external host. Document which device registers, which bridge mixes the participants and which screen controls the meeting. The Grandstream GAC2570 reference applies this separation to one current exact model. The Yealink CP965 reference separately maps its one SIP account, ten-way local conference, USB-C or Bluetooth host paths, optional analog adapter and expansion microphones.

Separate standalone phones from host-connected speakerphones

A standalone conference phone can register to a PBX or provider, while a USB or Bluetooth speakerphone relies on a computer or mobile device for the account, call or meeting. The Poly Sync 40 reference shows how corded USB, mobile Bluetooth, adapter models, application controls and a two-unit audio link remain different paths. Select and test the complete host-and-audio combination rather than transferring a conference-phone expectation to a peripheral.

Separate all-in-one video bars from table conference phones

A video conferencing bar adds cameras, displays, platform accounts, content paths and room controls to the audio problem. It is not merely a conference phone mounted below a screen. Define native, General or BYOD mode and commission every camera, microphone, speaker, display and privacy path.

Separate Wi-Fi and DECT variants of one tabletop design

Yealink offers a CP935W Wi-Fi path and a CP935W-Base DECT system. The similar room endpoint does not make direct Wi-Fi registration and a W70B-attached deployment interchangeable; evaluate radio, account, power, upgrade and recovery evidence for the exact package.

Watch the explanation

Grandstream GRP2670: transfer calls and manage a conferenceVersion-specific

Compare an immediate handoff with an attended transfer that gives the receiving person time to speak privately. The second part adds participants to a local conference and removes a selected participant, connecting the phone’s controls with the people involved in each call state.

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Watch this video here

GRP2670 touchscreen workflow. Transfer behavior and conference capacity depend on firmware, account settings and PBX support. Review used the available transcript and primary references; audio and screen readability remain unverified.

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Grandstream GRP2601: add participants to a five-way callVersion-specific

A compact demonstration adds four remote participants from a GRP2601, making five people including the phone user. It is useful for understanding the difference between adding another call leg and joining everyone into the same local conversation.

Read applicability and editorial notes →
Watch this video here

GRP2601 demonstration with five-way conferencing. Confirm the capability of the installed firmware; older installation material can show different limits. Review used the available transcript and primary references; audio and screen readability remain unverified.

Open on YouTube ↗

The player loads only when you choose Watch here. Playback uses YouTube’s privacy-enhanced embed; YouTube processes playback data.

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Sources & applicability

Primary references for the technical details above. Operational examples and planning checklists are VoIP.info editorial guidance.

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Hub

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Research handsets by daily workflow, supported provisioning and documented hardware capabilities.

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Interactive tool

PoE budget calculator

Compare allocated phone power and other devices with the switch budget, including an explicit allowance.

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Guide

What is an IP phone?

Learn what a network handset needs beyond a cable: service, provisioning, power and a supported firmware path.

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Device reference · Exact-model manufacturer documentation

Grandstream GAC2570 conference phone

Separate the room's SIP, meeting-control and BYOD audio paths before accepting microphone reach, mobility or conferencing behavior.

Conference phone and room-audio endpoint
A current manufacturer product page and general firmware track were available at review; exact regional stock, orderable bundle, approved firmware and remaining support period were not established.

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Device reference · Exact-model manufacturer documentation

HP Poly Trio C60 conference phone

Distinguish the open SIP capable conference model from Teams variants before specifying room power or service.

Conference phone
Manufacturer documentation available at review; exact SKU availability, remaining support period and approved firmware not established.

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Current device research · Current Yealink CP965 product, support and exact-model datasheet plus CPW65 product and datasheet reviewed September 30, 2026; no phone, room, firmware, PBX, SIP account, host, accessory, radio path, protected session, power arrangement, audio, emergency route or call tested

Yealink CP965

Evaluate the current CP965 as an exact SIP conference-phone model, keeping its room pickup, one SIP account, local conference, hybrid-host paths, expansion microphones, PoE and firmware lane separate.

Conference phone
Yealink presented the SIP CP965 on its current product, resource and support sites at review and described B2B distribution. Exact regional availability, ordered platform edition, hardware revision, approved firmware, support entitlement and remaining support period were not established.

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Device category · Current first-party HP Poly Sync, Yealink SP96 and Jabra Speak2 75 product and technical documentation reviewed September 28, 2026; no speakerphone, host, application, account, meeting, room, wireless path, battery or call tested

USB and Bluetooth speakerphones

Choose host-connected room audio by application ownership, connection path, room acoustics, privacy, power and repeatable acceptance rather than pairing or a platform badge alone.

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Current device research · Current HP Poly Sync family page, exact 772C4AA specifications, product brief, Sync 40 series user guide and support listing reviewed September 28, 2026; no device, host, adapter, application, room, battery, radio, firmware, audio or call tested

HP Poly Sync 40 USB and Bluetooth speakerphone

Evaluate the Sync 40 as host-connected room audio whose direct USB, mobile Bluetooth, adapter variants, platform controls, two-unit link and room result require separate acceptance.

USB and Bluetooth speakerphone
HP listed Sync 40 standard, Microsoft Teams-certified and adapter variants in its current speakerphone family and support catalogue at review. Exact regional stock, purchased SKU, hardware revision, approved firmware, warranty entitlement and remaining support period were not established.

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Buying guide · Current first-party Yealink MeetingBar A50 product, specification, BYOD and security records reviewed October 10, 2026 as one exact-model example; other vendors and models require their own evidence; no room, video bar, display, camera, microphone, speaker, controller, cable, mount, tenant, account, application, network, meeting, price, availability, compatibility, privacy control or call was inspected or tested

All-in-one video conferencing bars

Choose a room video bar by operating mode, camera geometry, audio coverage, displays, controls, content path, management and a reproducible room acceptance plan.

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Device reference · Yealink's live MeetingBar A50 product page, datasheet, wired and wireless BYOD guides and A40/A50 security whitepaper reviewed October 10, 2026; exact regional SKU, package, platform entitlement, tenant, certification, accessory compatibility, firmware, price, stock, warranty entitlement and remaining support require confirmation; no A50, room, display, controller, cable, mount, network, account, tenant, application, camera, microphone, speaker, privacy control, content path, meeting or call was inspected or tested

Yealink MeetingBar A50

Evaluate A50 as a current Android room video bar while preserving platform mode, BYOD path, camera and audio specifications, accessories, management and General Mode SIP boundaries.

All-in-one video collaboration bar
A live product page and current product, BYOD and security documentation existed at review; regional orderability, package, certification, warranty entitlement and remaining support were not established.

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Diagnostic · Yealink MeetingBar A50 product, specification, wired and wireless BYOD and security records reviewed October 10, 2026 as the exact-device example; labels, menus and supported paths vary by model, platform and firmware; no video bar, room, display, cable, controller, accessory, account, tenant, application, camera, microphone, speaker, network, privacy control, meeting or call was inspected or tested

Video bar camera, microphone or room audio fails

Separate room-system mode and session state from privacy, device selection, BYOD transport, camera capture, microphone transmit, speaker output, displays and network service.

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Current device research · Current Yealink CP935W product and support pages plus the published 149.87.0.40 release note reviewed October 11, 2026; no phone, battery, charger, firmware, Wi-Fi network, PBX, SIP account, host, Bluetooth device, USB path, room, protected session, audio, emergency route or call was inspected or tested

Yealink CP935W Wi-Fi conference phone

Evaluate the CP935W as a battery-powered Wi-Fi SIP conference phone while keeping its registered SIP, Bluetooth, USB host, battery, room-audio and firmware paths separate.

Battery-powered Wi-Fi SIP conference phone
Yealink presented CP935W on current product and support pages at review. Exact regional availability, ordered hardware revision, approved firmware, service certification, warranty entitlement and remaining support period were not established.

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Current device research · Current Yealink CP935W-Base product and support pages, CP935W-Base datasheet, current W70B datasheet and DECT comparison, plus the published CP935W 149.87.0.40 release note reviewed October 11, 2026; no phone, base, battery, charger, firmware, LAN, DECT radio path, PBX, SIP account, host, expansion microphone, room, protected session, audio, emergency route or call was inspected or tested

Yealink CP935W-Base DECT conference system

Evaluate the CP935W-Base as a CP935W conference endpoint attached to a W70B single-cell DECT base, keeping endpoint, base, account, radio, host-audio and battery limits distinct.

Battery-powered conference phone with W70B single-cell DECT base
Yealink presented CP935W-Base and W70B on current product or support pages at review. Exact regional package, radio band, availability, hardware revisions, approved firmware pair, service certification, warranty entitlement and remaining support period were not established.

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