3-line IP Telephone, 10/100/1000 Mbps, 2.7' Backlit LCD Display, 3 Lines/ 6 SIP Accounts, 10 BLF Keys, Codec OPUS
- Brand / Vendor: GRANDSTREAM
- Hardware Model / MPN: GRP2604
- Deal Status: ⚡ Special Deal (20% OFF)
- Condition: 100% Brand New, Factory-Sealed Commercial Gear
- Category: Networking
- Fulfillment Origin: Dispatches from Texas & Florida distribution hubs
- Binational Availability: Commercial procurement ready for USA and Mexico
| Grandstream • GRP Series • Carrier-Grade GRP2604 3-Line Essential IP Phone • GRP2604 / GRP2604P An essential 3-line IP phone built for mass deployment with zero-touch provisioning — full HD audio on handset and speakerphone, 5-way conferencing, dual Gigabit ports with integrated PoE (GRP2604P), and centralized management through GDMS.
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| Built for Mass Deployment Zero-touch provisioning through GDMS gives service providers and enterprises a centralized interface to configure, provision, manage and monitor hundreds of phones — no desk-by-desk setup. TR-069 and AES-encrypted XML provisioning also supported. | Crystal-Clear HD Audio Full HD wideband audio on both handset and full-duplex speakerphone, backed by noise shield technology and AI noise reduction that filter out background noise — plus 5-way conferencing to bring the whole team into the call. | Carrier-Grade Security Enterprise-level protection with secure boot, dual firmware images and encrypted data storage, plus SHA-256 authentication, SRTP, TLS call encryption and 802.1X media access control. |
The Essential Desk Phone for High-Volume Deployments
| Part of Grandstream's carrier-grade GRP series, the GRP2604 packs the essentials that on-site and remote desktop workers actually use: 3 lines, 6 SIP accounts, and up to 3 call appearances, presented on a crisp 2.7 in (132×64) backlit LCD with dual-color LED line keys. Power users get room to work: 10 BLF keys for monitoring extensions, 4 XML-programmable context-sensitive soft keys, and 8 dedicated function keys. The RJ9 headset jack with EHS support connects Plantronics, Jabra, and Sennheiser wireless headsets without adapter boxes. The telephony feature set is complete for business use: call park and pickup, shared call appearance (SCA/BLA), a downloadable XML/LDAP phonebook of up to 2,000 contacts, an 800-record call log, hot-desking, and server redundancy with fail-over for uptime-critical installs. Two hardware versions cover every desk: the GRP2604 ships with a universal power supply, while the GRP2604P adds integrated 802.3af PoE for clean single-cable installs (power supply not included with the P version). |  |
Ready for Your Brand, Ready for Any Desk
 | A swappable faceplate lets service providers and enterprises brand every phone with their own logo — a simple detail that turns a commodity endpoint into part of your identity, ideal for hospitality, MSP fleets, and white-label voice services. The included base stand offers two viewing angles (39° and 45°), and the phone is wall-mountable for reception areas, warehouses, and break rooms (wall mount sold separately). Layer 2 (802.1Q/802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS keeps voice traffic prioritized on busy office networks. Multi-language support covers English, Spanish, French, German, Portuguese and many more — a practical advantage for bilingual workplaces. U.S. compliance includes FCC Part 15 Class B and FCC Part 68 HAC (hearing aid compatible), a common requirement in enterprise and public-sector purchasing. |
Technical Specifications
| Lines, Display & Keys | |
|---|---|
| Lines / SIP Accounts | 3 lines, 6 SIP accounts, up to 3 call appearances |
| Display | 2.7 in (132 × 64) backlit graphical LCD |
| Line Keys | 3 line keys with dual-color LED |
| BLF Keys | 10 |
| Soft Keys / Function Keys | 4 XML programmable context-sensitive soft keys; 5 navigation/menu keys; 8 dedicated function keys (Message w/ LED, Transfer, Headset, Mute, Send/Redial, Speakerphone, Vol+, Vol-) |
| Headset Port | RJ9 jack with EHS for Plantronics, Jabra & Sennheiser headsets |
| Custom Faceplate | Yes, swappable for logo customization |
| Audio | |
|---|---|
| HD Audio | HD handset and full-duplex speakerphone with wideband audio |
| Noise Reduction | Noise shield technology + AI noise reduction |
| Audio Conferencing | 5-way voice conferencing |
| Voice Codecs | G.729A/B, G.711µ/a-law, G.726, G.722 (wideband), G.723.1, iLBC, Opus; VAD, AEC, CNG, PLC, AGC, AJB; in-band and out-of-band DTMF (audio, RFC2833, SIP INFO) |
| Telephony Features | |
|---|---|
| Call Handling | Hold, transfer, forward, call park, call pickup, call waiting, shared call appearance (SCA) / bridged line appearance (BLA), off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot-desking |
| Phonebook | Downloadable XML / LDAP, up to 2,000 entries |
| Call Log | Up to 800 records |
| Reliability | Server redundancy and fail-over; personalized ringtones and music on hold |
| Network, Provisioning & Security | |
|---|---|
| Network Interfaces | Dual switched auto-negotiation 10/100/1000 Mbps Gigabit Ethernet ports; integrated PoE (GRP2604P only) |
| Wi-Fi | No |
| Protocols / Standards | SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, SNMP, 802.1X, TLS, SRTP, IPv6 |
| Device Management | GDMS (zero-touch cloud provisioning), TR-069, AES-encrypted XML configuration file; firmware upgrade via FTP/TFTP/HTTP/HTTPS |
| QoS | Layer 2 (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) |
| Security | Secure boot, dual firmware images, encrypted data storage; user/admin passwords with SHA-256; SIP authentication SHA-256 / SHA-512/256 / MD5 sess; AES security profile, SRTP, TLS call encryption, 802.1X |
| Languages | English, Spanish, French, German, Italian, Portuguese, Russian, Chinese, Korean, Japanese, Croatian, and more |
| Power, Physical & Environmental | |
|---|---|
| Power | Universal PSU: input 100–240 VAC 50/60 Hz, output +5 VDC 600 mA (included with GRP2604 only); PoE IEEE 802.3af Class 2, 3.84–6.49 W, IEEE 802.3az EEE (GRP2604P only) |
| Base Stand / Mounting | 2 angle positions (39° & 45°); wall-mountable (wall mount sold separately) |
| Dimensions (L × W × H) | 8.43 × 8.11 × 2.68 in (214 × 206 × 68 mm), with handset |
| Weight | Unit: 1.74 lb (790 g) |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Storage Temperature / Humidity | 14°F to 140°F (-10°C to 60°C); 10–90% non-condensing |
| Compliance | FCC Part 15 Class B, FCC Part 68 HAC; CE (EN 55032, EN 55035, EN 61000-3-2/-3-3, EN 62368-1); IC (ICES-003, CS-03); RCM |
What's in the Box
| GRP2604 Phone With handset and cord | Base Stand 2 angle positions | Universal Power Supply* GRP2604 (non-PoE) version only | Network Cable + Extras Quick Installation Guide, BLF labels |
* The GRP2604P (PoE version) does not include a power supply; it is powered directly by an 802.3af PoE switch or injector.
| Ideal Applications High-volume enterprise and call-center desk deployments • Service provider and MSP-managed voice fleets via GDMS • Hospitality and front-desk phones with custom-branded faceplates • Remote and hybrid worker home offices • PoE single-cable installs paired with the GWN series switches (GRP2604P) • UCM6300 series IP PBX deployments and hot-desking environments |
• Free Ground Shipping: Automatically applied to all orders of $500.00 USD and above across the 48 Contiguous United States.
• Same-Day Dispatch: Orders placed before 2:00 PM CST (Mon–Fri) dispatch the same business day from our Texas & Florida distribution hubs.
• Carrier & Transit: UPS Ground / FedEx Ground (typically 2–5 business days).
• 100% Genuine Gear: Brand new, factory-sealed hardware directly sourced via authorized manufacturer channels.
• Full Factory Warranty: Covered by standard manufacturer warranty and RMA replacement support.
• 30-Day Hassle-Free Returns: Unopened and factory-sealed equipment eligible for return within 30 days of delivery.
