SoundPoint IP 650 vs IP 670 — difference?

Display. The 670 has a 320×240 color TFT; the 650 is a 320×160 monochrome LCD. Same chassis, same six-line layout, same gigabit Ethernet, same expansion module support.

Is the SoundPoint IP 670 still supported on voip.army?

Yes — UCS firmware 4.0.15 on our legacy provisioning VLAN. Provisioning stays isolated because the phone predates TLS 1.2; call media is normal.

Can I add an expansion module to the SoundPoint IP 670?

Yes — the SoundPoint IP Color Expansion Module (also called the IP 4250 module). Each adds 14 keys with multi-color status; up to three modules per phone.

What's the modern equivalent?

The Poly VVX 450 — twelve-line color desk phone with gigabit, dual USB, VVX EXP 50 expansion module support, current UCS firmware. About $100 more than a refurbished 670; significantly more phone.

Polycom · SoundPoint IP · legacy fleet

Polycom SoundPoint IP 670Still works. Still supported.

The SoundPoint IP 670 is the color-display variant of the IP 650 — same six-line HD-voice gigabit chassis, but with a 320×240 color TFT. The premium late-era SoundPoint phone; the closest the SoundPoint family ever got to looking like a modern color desk phone. EOL'd 2016; supported on voip.army.

Display

color TFT

SIP accounts

6 lines

Ethernet

Dual gigabit

Type

Desk phone

EOL year

2016

Condition

Refurbished / pre-owned

$139 refurbished

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

Pre-owned, tested, re-flashed for voip.army — 30-day return

Order a SoundPoint IP 670 Rent for $11.99/mo Datasheet (PDF) ↓

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Polycom SoundPoint IP 670 VoIP phone — front view with handset and dialpad — Polycom SoundPoint IP 670

Why we still support the SoundPoint IP 670.

The SoundPoint IP 670 was the color version of the IP 650 — same six-line HD-voice chassis, same gigabit Ethernet, same expansion module support, but with a 320×240 color TFT display instead of the IP 650's monochrome LCD. Released 2010, EOL'd 2016.

It was the phone law-firm partners and executive assistants got when their managers got the IP 650. The color display added a visual hierarchy to BLF labels (red = busy, green = available) that improved at-a-glance status awareness. Beyond that, it's functionally identical to the IP 650.

For existing fleets, the 670 onboards onto voip.army's legacy provisioning VLAN. For new orders the modern equivalent is the VVX 450 — twelve-line color, gigabit, dual USB, VVX EXP 50 support, current UCS firmware. The 670 is the closest the SoundPoint family ever got to looking like a modern phone; the VVX 450 is what that progression actually looks like in 2026.

Full technical specifications.

Display & user interface
Display	320×240 pixel color TFT LCD
Line keys	6 line keys with dual-color LEDs
Soft keys	Context-sensitive under the display
VoIP & SIP
SIP accounts	6
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.729AB, G.726, iLBC
Audio
Speaker	Full-duplex with Polycom Acoustic Clarity
HD voice	G.722 wideband on handset/speaker
Headset	RJ9 headset jack
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	1.18 kg
Dimensions	265 × 175 × 195 mm
Wall-mountable	Yes
Lifecycle status
EOL year	2016
Firmware on voip.army	Polycom UCS 4.0.15 (legacy provisioning VLAN)
voip.army stock	Refurbished / pre-owned, tested and re-flashed

How it works on voip.army.

The SoundPoint IP 670 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 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.

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 SoundPoint IP 670s?

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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