What's the difference between GRP2615 and GRP2616?

The GRP2616 upgrades Wi-Fi (4 → 6), Bluetooth (4.2 → 5), and the USB port (USB-A → USB-C). Processor is also faster. Everything else is the same. About $30 more — worth it for new deployments expected to last 5+ years.

Does the GRP2616 have a touchscreen?

No. Both displays are non-touch.

How many BLF buddies can it monitor?

40 native, 200 with four GBX20 sidecars. Same as the GRP2615.

Will my old USB-A Jabra headset work?

Yes with a USB-A to USB-C adapter — those cost about $5 and Grandstream ships one with some bundle SKUs. Or get a USB-C native headset; most 2024+ business headsets ship in both flavors.

Grandstream · GRP series · executive

Grandstream GRP2616The power-user GRP.

A 4.3-inch color screen, a 2.4-inch side screen, 16 SIP accounts, dual gigabit, built-in Wi-Fi 6 and Bluetooth 5, USB-C, and up to 4× GBX20 sidecars. The GRP2616 is the GRP2615 with refreshed wireless silicon — the buy if you are deploying in 2026 and want Wi-Fi 6 + Bluetooth 5 future-proofing on day one.

Display

4.3″ main + 2.4″ side · color

SIP accounts

16 lines

Programmable keys

40 multi-color + GBX20 sidecars

Ethernet

Dual gigabit · PoE class 1

Wi-Fi 6 + Bluetooth 5

Built in

USB

1× USB-C

$199 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 GRP2616 Rent for $11.99/mo Datasheet (PDF) ↓

✓ Auto-provisioned out of the box ✓ Warranty replacement included with rental ✓ Free shipping on orders $200+

Grandstream GRP2616 voip desk phone — front view with handset and display — Grandstream GRP2616

Why the GRP2616 is on the catalog.

The GRP2616 is a 2024-generation refresh of the GRP2615: same form factor, same 40-key multi-color BLF panel, same expansion via GBX20 sidecars — but with three meaningful silicon upgrades. Wi-Fi 6 instead of Wi-Fi 5 (better roaming, lower jitter on dense networks), Bluetooth 5 instead of 4.2 (longer range, faster pairing, multi-device support), and a USB-C port instead of USB-A. The processor is also bumped, which makes the UI feel noticeably more responsive after the first year of firmware bloat.

Where the GRP2616 makes more sense than the GRP2615: any deployment in 2026 or later where you expect the phone to be on a desk for 5+ years. Wi-Fi 6 future-proofs you for AX-only office networks; USB-C means the headsets and dongles you buy in 2026 will still plug in directly in 2030 (USB-A is officially deprecated on most new accessories now). The extra ~$30 over the GRP2615 amortizes to nothing over a five-year lifecycle.

Where it does not: if you are buying for a deployment that will be replaced inside two years, or where you are matching existing GRP2615 inventory, the GRP2615 is the smarter buy at $30 less.

Full technical specifications.

Display & user interface
Main display	4.3-inch 480×272 color TFT LCD
Secondary display	2.4-inch color LCD with 40 multi-color BLF keys
Native programmable keys	40 (multi-color: red / green / amber)
Soft keys	4 context-sensitive XML soft keys
VoIP & SIP
SIP accounts	Up to 16 simultaneously
Protocols	SIP RFC3261, NAT (STUN), TLS, SRTP, BLF, SCA
Codecs	Opus, G.722, G.711a/u, G.726, G.729A/B, iLBC, AMR-WB
Provisioning	TR-069, XML, GDMS cloud
Audio
HD voice	HD handset, HD speaker, HD headset
Speaker	Full-duplex hands-free with AEC + noise suppression
Headset	RJ9 wired, USB-C, Bluetooth 5, EHS via adapter
Connectivity
Ethernet	Dual 10/100/1000 Mbps gigabit
PoE	IEEE 802.3af Class 1
Wi-Fi	Built-in dual-band Wi-Fi 6 (802.11ax)
Bluetooth	Built-in Bluetooth 5
USB	1× USB-C host port
Expansion
Sidecar	Up to 4× GBX20
Max programmable keys	200 with full expansion
Physical
Dimensions	234 × 217 × 78 mm
Weight	Approximately 1.1 kg
Wall mount	Yes
In the box (from voip.army)
Included	GRP2616 handset, base, curl cord, ethernet cable, stand, provisioning card
Not included	Power adapter (PoE preferred), USB-C accessories, GBX20 sidecars

How it works on voip.army.

Plug the GRP2616 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 connection.

SIP accounts on one phone

16 lines per phone. Each line key has a dual-color LED for status at a glance.

Programmable keys

40 multi-color + GBX20 sidecars mapped from the voip.army portal — BLF, paging, parking, transfer destinations.

Per-device onboarding fees

Bringing your own? Send the MAC, factory-reset, plug in. No charge to add it to the fleet.

802.3af

PoE class

Standard PoE — any 802.3af-compliant switch from the last 15 years powers the phone without an adapter.

GDMS

Grandstream Device Management

Provisioning template tested against every Grandstream firmware release for GRP2616. We catch regressions before they reach your fleet.

Need GRP2616s 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.

Get a quote Start a free trial first

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

Grandstream GRP2616The power-user GRP.

Why the GRP2616 is on the catalog.

Full technical specifications.

How it works on voip.army.

Time from plug-in to first call

SIP accounts on one phone

Programmable keys

Per-device onboarding fees

PoE class

Grandstream Device Management

Phones to compare it against.

Grandstream GRP2615

Grandstream GRP2624

Grandstream GRP2634

Need GRP2616s for every desk?