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Black VoIP desk phone with 3.5 inch colour screen and handset

SNOM TECHNOLOGY

SNOM TECHNOLOGY SNO-821-BK VoIP Phone 3.5" 320x240 Black

SKU CH-GRMJ-NKP7T MPN SNO-821-BK

A 3.5 inch colour VoIP desk phone with dual Gigabit ports, 250-contact directory and five-way conferencing

  • Port count2 x IEEE 802.3/1 Gigabit Switch USB Type A
  • Security featuresHTTPS (server/client) Transport Layer Security (TLS) SRTP (R
  • Display type3.5 in, 320 × 240 pixels, High-resolution TFT color display
  • Indicator lightsLED indication for missed calls and new messages
  • Power details5 V DC Power over Ethernet: IEEE 802.3af, Class 2
  • Product typeTelephone
  • 5" TFT colour display at 320 x 240 for clear call information
  • Dual Gigabit Ethernet ports with integrated switch for fast network throughput
  • USB Type A host interface supports peripherals and WLAN adapter
  • Five-way on-phone conferencing bridge for multi-party calls
  • 250-entry directory with import and export for contact management

Business VoIP handset with 3.5" colour display

The SNOM 821-BK is a desk phone built for SIP environments that need a 3.5 inch TFT colour screen at 320 x 240 pixels. It targets offices using hosted PBX or on-premise SIP servers and users who want a dedicated device rather than a softphone. Two Gigabit Ethernet ports allow the phone and a PC to share one wall socket. Power over Ethernet Class 2 is supported alongside the bundled 5 V DC supply.

Desk-ready installation with dual Ethernet

Plug the LAN port into the network and the PC port into a computer to pass through connectivity without an extra switch port. The handset and optional headset both use RJ-4P4C connectors that click into labelled sockets on the rear. A USB Type A port accepts the vendor’s WLAN adapter for 802.11b/g/n wireless if cabling is impractical. The 37 keys and 9 LEDs are labelled clearly, but the menu depth can feel dense for first-time SIP users; provisioning via HTTPS/TLS or SRTP reduces manual entry errors.

Verify SIP server compatibility and cabling

Confirm that the PBX supports the listed codecs: G.711, G.722, G.723.1, G.726, G.729AB, GSM 6.10 and iLBC. The phone directory holds 250 entries and supports import or export for bulk updates. Five-way conferencing runs on the device itself, so no external bridge is required. Buyers who need more than two Ethernet ports, a larger touchscreen, or Bluetooth headset pairing should look at other models.

How it compares

Measured against everything we stock in IP Phones & VoIP Handsets, at today’s prices. Recalculated every night.

Price $167.99
Pricier than about 59% of the 495 comparable items (median $138.99).

Specifications

Product
Brand nameSnom
Model nameSNO-821-BK
Product typeTelephone
Display
Display type3.5 in, 320 × 240 pixels, High-resolution TFT color display
Ports & slots
Port count2 x IEEE 802.3/1 Gigabit Switch
USB Type A
Power
Power details5 V DC
Power over Ethernet: IEEE 802.3af, Class 2
Size & build
Product weightWeight, with footstand: approx. 900g
Without footstand: approx. 670g
Shipping weight2.49 kg
Package size165 × 127 × 121 mm
More details
Security featuresHTTPS (server/client)
Transport Layer Security (TLS)
SRTP (RFC 3711), SIPS, RTCP, VLAN (IEEE 802.1X)
LLDP-MED
Indicator lightsLED indication for missed calls and new messages

Questions about this item

How can I confirm the SNO-821-BK is working after setup?

Make a test call and verify two-way audio through the handset or headset. Check that the 3.5" 320x240 display shows caller ID and that the missed-call LED lights when a call goes unanswered.

What comes in the box with the SNO-821-BK and what must I buy separately?

The phone, footstand, handset with RJ-4P4C cord, Ethernet cable and 5 V DC power supply are included. A headset with RJ-4P4C plug and a USB Wi-Fi adapter for 802.11b/g/n are optional extras.

Which version of the SNO-821-BK should I choose for my deployment?

The SNO-821-BK is a single black model with a 3.5" colour display, dual Gigabit ports, USB 2.0 host and 250-entry directory. There are no alternative capacities or colours listed.

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