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 GRP2602 Essential IP Phone
The Grandstream GRP2602 takes the same compact, hard-wearing shell as the GRP2601 and quadruples the account capacity. Four SIP accounts can be registered against two line keys, which means one phone can sit on a personal DDI, a departmental hunt group, an out-of-hours number and a second provider without needing extra hardware on the desk.
It is an easy specification for small offices, multi-tenant buildings and resellers who want one model to cover most standard desks. A 2.41-inch backlit LCD, full-duplex HD speakerphone and 5-way conferencing cover day-to-day calling, while secure boot and encrypted provisioning keep large estates manageable. The base GRP2602 uses its supplied mains adapter; the GRP2602P adds 802.3af PoE, the GRP2602G adds Gigabit ports with PoE, and the GRP2602W adds dual-band Wi-Fi 6.
Ideal for
- Small and medium offices standardising on one desk phone
- Staff who cover more than one number or department
- Serviced and multi-tenant offices with mixed providers
- Reception overflow and shared administrative desks
- Hosted voice providers wanting headroom above a single-account phone
- Sites migrating from analogue where a simple, familiar layout helps adoption
Key features
- Four SIP accounts on two lines — cover several numbers or providers from one handset
- 2.41-inch backlit graphical LCD — clear caller ID and menus in poorly lit rooms
- Two dual-colour line keys — see at a glance which line is ringing, active or on hold
- Four programmable soft keys — context-sensitive XML keys that follow the call state
- 5-way audio conferencing — run a quick multi-party call from the phone itself
- Full-duplex HD speakerphone — both parties can talk at once without clipping
- Wideband codecs including G.722 and Opus — noticeably better speech quality on internal calls
- RJ9 headset jack with EHS — Plantronics, Jabra and Sennheiser hook switch support
- Dual 10/100 Ethernet ports — share one network drop between phone and PC
- Secure boot with dual firmware images — safe remote upgrades across a large estate
Technical specification
Telephony
- 4 SIP accounts, 2 lines
- 5-way audio conferencing
- Codecs: G.711µ/a-law, G.722 (wideband), G.729A/B, Opus and other standard codecs
- Full-duplex speakerphone with HD audio
Display and controls
- 132 × 48 pixel, 2.41-inch backlit graphical LCD
- 2 line keys
- 4 programmable soft keys
- 8 dedicated function keys
Network and variants
- GRP2602 and GRP2602W: dual 10/100 Mbps Ethernet ports
- GRP2602P: dual 10/100 Mbps ports with integrated PoE
- GRP2602G: dual 10/100/1000 Mbps ports with integrated PoE
- GRP2602W: integrated dual-band 2.4GHz and 5GHz Wi-Fi 6
- PoE class: IEEE 802.3af Class 1, 3.84W
Power and physical
- Universal power supply, 100–240VAC input
- Dimensions: 208 × 180 × 63.4 mm
- Weight: approximately 670g
Security and management
- Secure boot, dual firmware images, encrypted data storage
- SHA-256 and SHA-512 authentication
- TLS signalling and SRTP media encryption
- GDMS and TR-069 remote provisioning
Datasheet
Download the official Grandstream GRP2602 datasheet (PDF)
Works with
| Brand | Grandstream |
|---|---|
| SKU | GRP2602 |
| Product type | IP PHONES |
| Availability | In stock |
- PSU for GRP260x — spare or replacement mains adapter
- Grandstream GRP2601 — the two-account version where budget is tightest
- Grandstream GRP2604 — adds 10 BLF keys for staff who watch colleagues' lines
- Replacement curly cord — fits the whole GRP range
- Headsets — EHS and USB options for high-volume callers
- All Grandstream IP phones
- Grandstream UCM6302 IP PBX — a compact on-site UCM to register the GRP2602 to
Frequently asked questions
What is the difference between the GRP2601 and GRP2602?
Both have two lines and the same 2.41-inch display, but the GRP2602 registers up to four SIP accounts against those lines rather than two. If a user needs to appear on several numbers or platforms, the GRP2602 is the one to choose.
Which variant should I order for PoE?
The GRP2602P has integrated 802.3af PoE on 10/100 ports. If you also want Gigabit to the desk, the GRP2602G combines Gigabit ports with PoE.
Does the GRP2602 have Wi-Fi?
Only the GRP2602W variant, which includes dual-band 2.4GHz and 5GHz Wi-Fi 6. The standard model is wired only.
Can four accounts be used at once?
The phone registers four accounts simultaneously and presents them across two line keys, so incoming calls to any registered number will ring the handset.
Is it compatible with third-party SIP platforms?
Yes. The GRP2602 is a standards-based SIP phone and is widely deployed against hosted platforms as well as Grandstream's own UCM range.
Want help matching the right GRP2602 variant to your cabling? Call 0333 242 1314 or email sales@clisecure.com and we will check before you order.
Trusted by trade buyers
"CLI Secure has been our go-to for Fortinet hardware and renewals. Fast delivery and knowledgeable support every time."

"We ordered Grandstream phones for a full office rollout. The trade pricing and next-day delivery saved us both time and budget."

"Very professional IT networking supplier. Their pre-sales team helped us spec the right firewall for a multi-site deployment."

"Great stock availability on Hikvision cameras. Everything arrived well packaged and on time. Will order again."

Built for B2B buying
From product selection to deployment, this is made for real projects.
Get the hardware, licences and supporting kit you need without chasing multiple suppliers. CLI Secure helps trade buyers confirm fit, stock, delivery and project pricing before checkout.
Better buying value
Why trade buyers choose CLI Secure
- Trade and bulk pricing support
- Compatibility advice before purchase
- UK delivery options and account support
- Hardware, renewals and accessories in one place
- Limited project advice
- Unclear warranty or channel source
- Harder to quote bundles and renewals
- Separate suppliers for accessories
- Less flexible fulfilment for mixed baskets
- More admin for repeat trade orders
Why choose us
Procurement that feels fast, clear and trade-ready.
Every product page is designed to help you move from shortlist to checkout with fewer unknowns.
Verified buyer feedback
Trusted by installers, resellers and IT teams.
CLI Secure helped us confirm the right supporting accessories and saved us a return. Good trade service.
Keith D.Reliable fulfilment for security hardware and renewals. The team understands what business buyers need.
Rania M.Common questions
Product and order FAQs
Can I request trade or bulk pricing?
Yes. For multi-unit, reseller or project orders, contact CLI Secure and our team can review the basket for trade pricing.
How quickly can this be delivered?
Available delivery options are shown at checkout. Many in-stock products support next-day or timed UK delivery.
Can you help confirm compatibility?
Yes. Share the existing setup, model numbers or project requirement and we can help confirm suitable hardware, licences or accessories.
Do you supply renewals and supporting accessories?
CLI Secure supplies hardware, renewals, licences and related accessories across networking, CCTV, VoIP and IT support categories.





