Fast dispatch and helpful advice before we placed a multi-site order. Pricing was clear and the product arrived ready for install.
Wesley G.
Grandstream GRP2616 Carrier-Grade IP Phone
The Grandstream GRP2616 pairs a 4.3-inch colour main display with a second 2.4-inch portrait screen dedicated to labelling its keys. Six line keys register up to sixteen SIP accounts and can be programmed digitally as twenty-four BLF or fast-dial positions, all labelled on screen rather than on printed paper inserts.
It is aimed at senior users and busy coordinators who need visibility of colleagues without moving up to a full ten-key console. Dual-band Wi-Fi 6 and Bluetooth are integrated, so it works on a hot desk or in a home office as readily as on a cabled floor, and USB headset support sits alongside the traditional RJ9 EHS jack. Gigabit ports with 802.3af PoE keep installation to a single cable.
Ideal for
- Department heads and senior managers covering several numbers
- Office coordinators who transfer calls but do not need a full switchboard
- Hybrid workers alternating between home and office desks
- Sites where key labels change often and paper inserts are a nuisance
- Buildings where new cabling is difficult and Wi-Fi is the practical option
- Executive offices wanting a large, legible colour display
Key features
- Six line keys with up to 16 SIP accounts — plenty of registration capacity for multi-role users
- Up to 24 digital BLF or fast-dial positions — monitor colleagues without an expansion module
- 4.3-inch 480 × 272 colour main display — large, legible caller and menu detail
- 2.4-inch 240 × 320 secondary screen — digital key labels that update through provisioning
- Integrated dual-band Wi-Fi 6 — 802.11a/b/g/n/ac/ax on 2.4GHz and 5GHz
- Integrated Bluetooth — wireless headsets and mobile contact sync
- Dual Gigabit Ethernet with integrated PoE — one cable to the desk
- USB and RJ9 EHS headset support — use whichever headset the user prefers
- Wideband HD audio — G.722 and Opus on handset and speakerphone
- Secure boot with encrypted data storage — carrier-grade protection as standard
Technical specification
Telephony
- 6 line keys with up to 16 SIP accounts
- Line keys digitally programmable as up to 24 BLF or fast-dial keys
- 3-way conferencing
- Codecs: G.711µ/a-law, G.722 (wideband), G.723, G.726, G.729A/B, iLBC, Opus
Displays
- Main: 4.3-inch 480 × 272 TFT colour LCD
- Secondary: 2.4-inch 240 × 320 screen for key labelling
Network and wireless
- Dual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE
- Integrated dual-band 2.4GHz and 5GHz Wi-Fi 6 (802.11a/b/g/n/ac/ax)
- Integrated Bluetooth
- USB port
Audio and headset
- HD handset and speakerphone with wideband audio
- RJ9 headset jack with EHS for Plantronics headsets
Power and physical
- Integrated Power over Ethernet, IEEE 802.3af
- Maximum power consumption: 6.1W via adapter, 7.8W via PoE
- Dimensions: 247 × 228 × 82.4 mm
- Unit weight: 1020g
Security
- Secure boot, dual firmware images, encrypted data storage
Datasheet
Download the official Grandstream GRP2616 datasheet (PDF)
Works with
| Brand | Grandstream |
|---|---|
| SKU | GRP2616 |
| Product type | IP PHONES |
| Availability | In stock |
- Grandstream GRP2615 — 10 line keys and GBX20 expansion for switchboard duty
- PSU for GRP2616 — mains adapter where PoE is unavailable
- Wall mount bracket for GRP2616
- Grandstream GUV3050 Bluetooth headset
- All Grandstream IP phones
- IP PBX solutions
Frequently asked questions
What does the second screen do?
It labels the line and BLF keys digitally. When you reassign a key, the label changes automatically instead of needing a reprinted paper insert.
How does the GRP2616 differ from the GRP2615?
The GRP2615 has ten line keys, forty digital BLF positions and GBX20 expansion support. The GRP2616 has six line keys, up to twenty-four BLF positions and the second labelling screen instead.
Can it run entirely over Wi-Fi?
Yes. Dual-band Wi-Fi 6 is integrated, so only power is required at the desk if you would rather not run a data cable.
Does it support USB headsets?
Yes, alongside the RJ9 jack with EHS for Plantronics models, so most headset types are covered.
Is 802.3af PoE enough to power it?
Yes. Maximum draw is 7.8W over PoE, comfortably within the 802.3af budget of a standard PoE switch port.
Comparing the GRP2615 and GRP2616 for your team? Call 0333 242 1314 or email sales@clisecure.com.
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"We ordered Grandstream phones for a full office rollout. The trade pricing and next-day delivery saved us both time and budget."

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