Grandstream GXP1620 2-Line SIP Phone

The Grandstream GXP1620 adds the two things people most often miss on the GXP1610: a backlit display and two dedicated line keys with dual-colour LEDs. That means a user can see the phone in a dim office and tell at a glance which line is ringing, connected or on hold, without reading the screen.

Beyond that it keeps the same sensible, low-maintenance formula — two SIP accounts, two call appearances, thirteen dedicated function keys, a 1000-entry downloadable directory and 256-bit AES encrypted provisioning. It is a good default for general office desks where nobody needs BLF keys or a colour screen, but everybody needs a phone that behaves predictably. This model is mains-powered; the GXP1625 is the same phone with PoE.

Ideal for

• General office desks that do not need BLF or colour displays
• Poorly lit rooms where a backlit screen genuinely helps
• Meeting rooms, kitchens and shared areas
• Small businesses standardising on one simple handset
• Reception overflow and secondary positions
• Analogue replacements where a familiar layout eases the transition

Key features

• Two dual-colour LED line keys — instant visual state for each line
• 2.95-inch backlit graphical LCD — readable in poorly lit offices
• Two SIP accounts with two call appearances — hold one call while taking another
• Three XML programmable soft keys — context-sensitive functions that follow the call
• Thirteen dedicated function keys — the common operations are always one press
• 3-way audio conferencing — add a third party from the handset
• 1000-entry downloadable phonebook — company directory pushed from your platform
• Wideband G.722 audio — clearer speech than narrowband-only handsets
• RJ9 headset jack with EHS — Plantronics electronic hook switch support
• 256-bit AES encrypted configuration and 802.1x — stronger security than most phones at this price

Technical specification

Telephony

• 2 lines, 2 SIP accounts, up to 2 call appearances
• 3-way audio conferencing
• Codecs: G.711µ/a, G.722 (wideband), G.723, G.726-32, G.729A/B, iLBC

Display and keys

• 132 × 48 pixel, 2.95-inch backlit graphical LCD
• 2 line keys with dual-colour LEDs
• 3 XML programmable context-sensitive soft keys
• 13 dedicated function keys

Network and power

• Dual switched auto-sensing 10/100 Mbps Ethernet ports
• No integrated PoE on this model — the GXP1625 adds PoE
• Universal power supply: 100–240VAC 50/60Hz input, +5VDC 600mA output

Audio and headset

• HD handset and speakerphone
• RJ9 headset jack with EHS for Plantronics headsets

Physical

• Dimensions: 209 × 184.5 × 76.2 mm with handset
• Weight: 0.73kg unit, 1.1kg packaged

Security and provisioning

• TLS and SRTP encryption
• 256-bit AES encrypted configuration file
• 802.1x media access control
• Firmware upgrade via TFTP, HTTP or HTTPS; mass provisioning via TR-069 or encrypted XML

Datasheet

Download the official Grandstream GXP1620 datasheet (PDF)

Works with