Trio 8500 vs Trio 8800 — what's the upgrade?

Four things: gigabit Ethernet (vs 100Base), support for up to two satellite expansion microphones (extending pickup to 40+ feet), built-in Wi-Fi, and IEEE 802.3at PoE+ for the larger audio path. About $300 more. The right pick for boardrooms; the 8500 is for smaller rooms.

How many expansion microphones can the Trio 8800 support?

Up to two Poly satellite expansion microphones, one chained from each side. With both deployed, microphone pickup extends to about 40 feet down a long table — appropriate for a 20-seat boardroom.

Does the Trio 8800 have built-in Wi-Fi?

Yes — dual-band 802.11a/b/g/n/ac. Useful for conference rooms where running Ethernet to the table is impractical. Just power the phone over PoE+ (or DC adapter) and join Wi-Fi from the touchscreen.

Will the Trio 8800 work with Microsoft Teams or Zoom?

Yes — the Trio 8800 supports both Skype for Business / Teams certification mode and standard SIP for Zoom Phone, Webex Calling, voip.army, and any other SIP-compliant service. You can switch modes from the touchscreen settings.

Poly · Trio series · conference

Poly Trio 8800Still works. Still supported.

The Poly Trio 8800 is the boardroom-tier current-generation IP conference phone — 5-inch color touchscreen, gigabit Ethernet, IEEE 802.3at PoE+, support for up to two Poly satellite expansion microphones, Wi-Fi, Bluetooth, NFC, USB. The full-featured Trio model; the conference phone for rooms where the 8500 isn't enough.

Display

color touchscreen

SIP accounts

4 lines

Ethernet

Dual gigabit

Type

IP conference phone (boardroom

EOL year

Current

Condition

New

$899 one-time

or rent for $24.99/mo — month-to-month, return anytime

Ships pre-configured for voip.army

Order a Trio 8800 Rent for $24.99/mo Datasheet (PDF) ↓

✓ Auto-provisioned out of the box ✓ Warranty replacement included with rental ✓ 30-day return on refurbished

Poly Trio 8800 VoIP phone — front view with handset and dialpad — Poly Trio 8800

Why we still support the Trio 8800.

The Trio 8800 is the boardroom version of the Trio 8500 — same chassis, same touch interface, but with materially more capability: gigabit Ethernet on both ports, support for up to two Poly satellite expansion microphones (extending pickup to 40-plus feet for long boardroom tables), built-in Wi-Fi for cable-free deployments, NFC for tap-to-pair, and IEEE 802.3at PoE+ to power the larger audio path.

It's the modern equivalent of the SoundStation IP 7000. We ship it to boardrooms, executive briefing centers, and large training rooms where a single chassis isn't going to cover the room. The expansion microphones plug in via the back of the unit and auto-discover on the Trio's expansion bus.

Where it isn't the right phone: for huddle rooms or small conference rooms, the Trio 8500 is functionally adequate for $300 less. The 8800 is specifically for rooms where you'll use the expansion mics, the Wi-Fi, or the gigabit Ethernet — otherwise the price premium is hard to justify.

Full technical specifications.

Display & user interface
Display	5-inch 720×1280 capacitive color touchscreen
Line keys	4 line keys with dual-color LEDs
Soft keys	Context-sensitive under the display
VoIP & SIP
SIP accounts	4
SIP protocols	SIP v2 (RFC 3261), supported on voip.army's legacy provisioning VLAN with UCS firmware 4.0.15
Codecs	G.711, G.722, G.722.1, G.722.1C, G.729AB, iLBC, Siren 14, Siren 22, Opus, AAC-LD
Audio
Speaker	Full-duplex with Polycom Acoustic Clarity
HD voice	G.722 wideband on handset/speaker
Headset	Speakerphone only / not applicable
Connectivity
Ethernet	Dual gigabit
PoE	IEEE 802.3af Class 2
Power & physical
Power source	PoE 802.3af Class 2 (preferred) or Polycom power adapter (sold separately)
Weight	1.2 kg
Dimensions	274 × 274 × 76 mm (triangular)
Wall-mountable	Yes
Lifecycle status
EOL year	Current product
Firmware on voip.army	Current UCS firmware track
voip.army stock	New, ships pre-configured

How it works on voip.army.

The Trio 8800 runs Polycom UCS firmware 4.0.15 — the last release that supports this hardware. It onboards onto voip.army the same way as any current phone, just on our legacy provisioning VLAN because the phone's TLS stack predates modern web standards. Call quality is normal SRTP.

60s

Time from plug-in to first call

Boot, fetch config from our provisioning server, register, ready. About one minute on a normal internet connection.

SIP accounts on one phone

Run up to 4 simultaneous SIP registrations. Each line key has a dual-color LED for status.

Per-device onboarding fees

Bringing your own? Send us the MAC, factory-reset, plug in. No charge to add it to the fleet.

4.0.15

UCS firmware version

Last firmware Polycom shipped for this phone (2018). Still works perfectly on voip.army; provisions over our isolated legacy VLAN because the phone can't speak TLS 1.2.

100m

Ethernet to the workstation

PC pass-through port on the back lets you daisy-chain a single ethernet drop to phone and computer.

802.3af

PoE class

Class 2. Any 802.3af-compliant switch from the last 15 years will power it without issue.

Onboarding a fleet of Trio 8800s?

Send us a CSV of MAC addresses. We add them to the provisioning server, you factory-reset and plug in, they pick up their voip.army config within a minute.

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