Grandstream GRP2604P 3-Line Essential IP Phone
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Ask AIM Telecom about this productAbout this product
• The GRP2604P is a 3-line carrier-grade IP phone designed for mass deployment and easy management, featuring a sleek design and next-generation features such as:
• 5-way voice conferencing
• Full HD audio on both the speaker and handset
• EHS support for Plantronics, Jabra, and Sennheiser headsets
• Multi-language support
• Key Features:
• 3 lines, 6 SIP accounts, up to 3 call appearances
• Supported by Grandstream’s Device Management System (GDMS)
• Electronic Hook Switch (EHS) support for Plantronics, Jabra, and Sennheiser headsets
• Full-duplex speakerphone with HD audio
• Equipped with noise shield technology to minimize background noise
• Dual switched autosensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE
• Supports 5-way audio conferencing for easy conference calls
• Enterprise-level protection including secure boot, dual firmware images, and encrypted data storage
• Additional Information:
• Weight: 2.37 lbs
• Dimensions: 11.73 × 8.31 × 3.19 in
• Brand: Grandstream
• Technical Specifications:
• 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, LDAP, TR069, SNMP, 802.1x, TLS, SRTP, IPv6
• Network Interfaces: Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports, integrated PoE
• Graphic Display: 132 x 64 (2.7’’) backlit graphical LCD display
• Feature Keys: 3 line keys with dual-color LED and support for 6 SIP accounts, 4 XML programmable context sensitive soft keys, 5 (navigation, menu) keys. 10 BLF keys, 8 dedicated function keys for: MESSAGE(with LED indicator), TRANSFER, HEADSET, MUTE, SEND/REDIAL, SPEAKERPHONE, VOL+, VOL-
• Auxiliary Port: RJ9 headset jack (allowing EHS with Plantronics & Jabra & Sennheiser headsets)
• Voice Codecs and Capabilities: Support for G.729A/B, G.711µ/a-law, G.726, G.722(wide-band), G.723,iLBC, OPUS, in- band and out-of-band DTMF(in audio, RFC2833, SIP INFO), VAD, AEC, CNG, PLC, AGC, AJB
• Telephony Features: Hold, transfer, forward, 5-way conference, call park, call pickup, shared-callappearance(SCA)/bridged-line-appearance(BLA), downloadable phonebook (XML, LDAP, up to 2000 items), call waiting, call log (up to 800 records), off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot-desking, personalized music ringtones and music on hold, server redundancy and fail-over
• 5-way voice conferencing
• Full HD audio on both the speaker and handset
• EHS support for Plantronics, Jabra, and Sennheiser headsets
• Multi-language support
• Key Features:
• 3 lines, 6 SIP accounts, up to 3 call appearances
• Supported by Grandstream’s Device Management System (GDMS)
• Electronic Hook Switch (EHS) support for Plantronics, Jabra, and Sennheiser headsets
• Full-duplex speakerphone with HD audio
• Equipped with noise shield technology to minimize background noise
• Dual switched autosensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE
• Supports 5-way audio conferencing for easy conference calls
• Enterprise-level protection including secure boot, dual firmware images, and encrypted data storage
• Additional Information:
• Weight: 2.37 lbs
• Dimensions: 11.73 × 8.31 × 3.19 in
• Brand: Grandstream
• Technical Specifications:
• 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, LDAP, TR069, SNMP, 802.1x, TLS, SRTP, IPv6
• Network Interfaces: Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports, integrated PoE
• Graphic Display: 132 x 64 (2.7’’) backlit graphical LCD display
• Feature Keys: 3 line keys with dual-color LED and support for 6 SIP accounts, 4 XML programmable context sensitive soft keys, 5 (navigation, menu) keys. 10 BLF keys, 8 dedicated function keys for: MESSAGE(with LED indicator), TRANSFER, HEADSET, MUTE, SEND/REDIAL, SPEAKERPHONE, VOL+, VOL-
• Auxiliary Port: RJ9 headset jack (allowing EHS with Plantronics & Jabra & Sennheiser headsets)
• Voice Codecs and Capabilities: Support for G.729A/B, G.711µ/a-law, G.726, G.722(wide-band), G.723,iLBC, OPUS, in- band and out-of-band DTMF(in audio, RFC2833, SIP INFO), VAD, AEC, CNG, PLC, AGC, AJB
• Telephony Features: Hold, transfer, forward, 5-way conference, call park, call pickup, shared-callappearance(SCA)/bridged-line-appearance(BLA), downloadable phonebook (XML, LDAP, up to 2000 items), call waiting, call log (up to 800 records), off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot-desking, personalized music ringtones and music on hold, server redundancy and fail-over
More product details
The Grandstream GRP2604P targets small to mid-sized businesses that need a robust, centrally manageable desktop phone without the cost and complexity of higher-end executive models. Its three line keys and support for up to six SIP accounts make it a natural fit for reception desks, administrative staff, or managers who handle a modest volume of calls but still require features like conference calling and headset integration. In a Canadian context, it is commonly adopted by multi-branch organizations across the GTA and southern Ontario, where IT teams can leverage Grandstream’s Device Management System (GDMS) to provision and support handsets remotely.
This phone pairs smoothly with leading headset brands (Plantronics, Jabra, Sennheiser) thanks to its built‑in EHS, and its gigabit passthrough port keeps a desktop PC connected without extra cabling. It works with any standards‑based SIP platform, from an on‑premises Grandstream UCM to a cloud‑based PBX or a carrier’s hosted service. These integration points make it a versatile choice when you are expanding an existing fleet or refreshing a legacy system.
Potential buyers should be aware of its limits. With only three call appearances, a user who routinely juggles four or more active calls will quickly outgrow this phone; in a high‑volume sales or support role, a six‑line model would be more appropriate. Conversely, for a shared breakroom or a light‑duty extension, the GRP2604P is over‑specified and a simpler one‑line phone would be a better value. Where it shines is the project deployment that needs consistent, secure, and instantly manageable endpoints without touching every desktop.
This phone pairs smoothly with leading headset brands (Plantronics, Jabra, Sennheiser) thanks to its built‑in EHS, and its gigabit passthrough port keeps a desktop PC connected without extra cabling. It works with any standards‑based SIP platform, from an on‑premises Grandstream UCM to a cloud‑based PBX or a carrier’s hosted service. These integration points make it a versatile choice when you are expanding an existing fleet or refreshing a legacy system.
Potential buyers should be aware of its limits. With only three call appearances, a user who routinely juggles four or more active calls will quickly outgrow this phone; in a high‑volume sales or support role, a six‑line model would be more appropriate. Conversely, for a shared breakroom or a light‑duty extension, the GRP2604P is over‑specified and a simpler one‑line phone would be a better value. Where it shines is the project deployment that needs consistent, secure, and instantly manageable endpoints without touching every desktop.