Is the VVX 300 still supported on voip.army?

Yes. We auto-provision it the same as any current VVX. Polycom UCS firmware 5.9.x runs on it and supports all the modern security features (TLS 1.2, SRTP) we require on our provisioning server.

Should I buy a VVX 300 or VVX 301 for a new deployment?

If you have the choice, get the 301. It's the direct successor, has a faster CPU, runs newer firmware longer, and costs roughly the same. We carry both because some customers want SKU continuity with existing fleets.

Does the VVX 300 support an expansion module?

Yes — the VVX Color Expansion Module / VVX EXP 50 connects via the back RJ45 port. Each EXP 50 adds 28 multi-color line keys with three pages, so 84 keys per module.

Does the VVX 300 have a color display?

No — it's a 208×104 greyscale LCD. For color in the same form factor look at the VVX 310 (which is the color version of the 300) or the current-gen VVX 350.

Poly · VVX series · greyscale workhorse

Poly VVX 300A greyscale workhorse that just keeps working.

The VVX 300 is the original six-line greyscale workhorse — a 3.5-inch 208×104 LCD, six SIP lines, RJ9 headset jack, and expansion module support. Long-discontinued, but we keep it in the catalog for customers who want to expand an existing fleet without changing models.

Display

3.5″ monochrome · 208×104

SIP accounts

6 lines

Ethernet

Dual 10/100

USB ports

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Bluetooth / Wi-Fi

—

Expansion

VVX EXP 50

$129 one-time

or rent for $11.99/mo — month-to-month, return anytime

Ships pre-configured · free next-business-day for orders $200+

Order a VVX 300 Rent for $11.99/mo Datasheet (PDF) ↓

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Poly VVX 300 VoIP desk phone — front view with handset and dialpad — Poly VVX 300

Why the VVX 300 is on the catalog.

The VVX 300 is the phone we shipped for years to receptionists who needed six lines and a clean monochrome display. It was the standard mid-tier Polycom business phone from roughly 2013 through 2018, when the VVX 301 (faster processor, refreshed firmware) replaced it.

Mechanically the 300 is essentially identical to the 301, just with the older PowerPC-class CPU. UCS firmware up through 5.9 still runs on it, and we still provision it without any special handling. If you've got a closet full of them from a previous PBX, there's no reason to retire them just because Poly moved the SKU.

Where it isn't the right phone for new orders: the 300 series doesn't have gigabit Ethernet on the PC pass-through, so anyone with a modern workstation behind the phone is capped at 100 Mbps. It also doesn't have USB. For new deployments we'd push you to the VVX 301 (direct successor, refreshed CPU) or the VVX 350 (gigabit + USB + same form factor).

Full technical specifications.

Display & user interface
Display	3.5-inch 208×104 monochrome backlit graphical LCD
Line keys	6 programmable line keys
Soft keys	4 context-sensitive soft keys under the display
Physical keys	Dialpad, hold, mute, transfer, headset, message, redial, volume, navigation
Languages	Multiple on-screen languages (English, Spanish, French, German, Portuguese, etc.)
VoIP & SIP
SIP accounts	Up to 6
SIP protocols	SIP v2 (RFC 3261), TLS / SRTP, NAT traversal, BLF / BLA, shared call appearance
Codecs	Opus, G.722, G.722.1, G.711a/μ, G.729AB, iLBC, Siren 14 / 22
DTMF	In-band, RFC 2833, SIP INFO
QoS	802.1p/Q VLAN tagging, DiffServ ToS, LLDP-MED
Audio
Speaker	Full-duplex with Polycom Acoustic Clarity (AEC, dynamic noise reduction)
HD voice	Polycom HD Voice on handset and speakerphone
Headset support	RJ9 headset jack, EHS via APP-51 adapter (sold separately)
Connectivity
Ethernet	Dual 10/100 Mbps
PoE	IEEE 802.3af Class 2
USB	None
Bluetooth	Not supported
Wi-Fi	Not supported (USB dongle not officially supported)
Power & expansion
Power source	PoE 802.3af Class 2 (preferred) or Poly 5V/0.6A power adapter (sold separately)
Expansion module	VVX EXP 50
Physical
Weight	1.02 kg
Dimensions	248 × 178 × 165 mm
Wall-mountable	Yes
Operating temperature	0 to 40 °C (32 to 104 °F)
In the box (from voip.army)
Included	Handset, base unit, curl cord, ethernet cable, stand, quick-start card, voip.army provisioning card with extension & SIP credentials pre-loaded
Not included	Power adapter (PoE preferred), EHS adapter for wireless headsets, expansion module

How it works on voip.army.

Plug the VVX 300 into PoE and ethernet. About a minute later it has registered to your extension. Same auto-provisioning flow as every other supported phone — no SIP credentials to type, no firmware to chase.

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 6 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.

100M

Ethernet to the workstation

10/100 Mbps pass-through is fine for voice but caps a daisy-chained workstation at 100 Mbps.

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USB headset ports

No USB. Wired RJ9 headset jack only (if equipped).

802.3af

PoE class

Class 2 on most VVX. Any standard 802.3af switch powers it; no separate adapter needed.

Need VVX 300s for every desk?

Tell us how many you need and what extensions to map. We ship pre-configured next business day; you plug them in and they work.

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✓ Free shipping on orders $200+ ✓ 30-day hardware return ✓ Pre-configured before shipping