Grandstream GRP2604P 3-Line IP Phone with 10 BLF Keys and PoE

The Grandstream GRP2604P is a 3-line desk IP phone with 6 SIP accounts, 10 BLF keys, a 2.7-inch screen and dual Gigabit ports with PoE. Made for receptionists, secretaries and anyone who transfers calls all day.

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The Grandstream GRP2604P is a 3-line desk IP phone with 6 SIP accounts and 10 BLF keys that show colleagues' status and transfer calls with a single press. Grandstream calls it the 3-Line Essential Lite, the step up from the 2-line phones in the GRP2600 range. It is built for receptionists, secretaries and office managers who field a lot of calls and route them to departments.

Grandstream GRP2604P specifications

• 3 line keys with dual-color LEDs, up to 6 SIP accounts.
• 10 BLF keys with paper labels for names.
• 2.7-inch backlit graphical LCD, 132×64.
• Dual 10/100/1000 Mbps Gigabit ports with integrated PoE (802.3af).
• Desk stand with two angles, 39° and 45°.

BLF keys: a switchboard on the reception desk

Each BLF key is tied to a colleague's extension and lights up to show whether that line is free or on a call. When a customer asks for accounts, you can see the accountant is busy before transferring, then offer to hold or send the call to a colleague. The keys can also be set as speed dial, call park, intercom or conference, and the included paper labels hold the names.

Three calls in front of you

With three line keys, the receptionist sees an active call, one on hold and a third ringing, and switches between them without confusion. Six accounts let you register the phone to the company PBX plus a branch PBX or a separate customer-service number. The 2.7-inch screen shows an extra line compared with the GRP2602 display.

Gigabit and PoE at reception

The phone takes power from a PoE switch and passes full Gigabit speed to the PC through its second port, so the booking or appointments system on the front-desk computer stays quick. Note the P model ships without an adapter; with no PoE switch, add the Grandstream 5V/0.6A PSU.

Audio, security and management

HD audio on handset and speaker comes with Noise Shield and AI noise reduction, plus an RJ9 jack for EHS headsets, which matters for anyone on the phone all day. TLS 1.3, SRTP encryption and secure boot are built in, and bulk provisioning works through GDMS, TR-069 or encrypted XML.

Where it is used in Saudi Arabia

• Front desks at hotels and serviced apartments in Makkah, Madinah and Riyadh.
• Reception at clinics and medical centers.
• Secretaries and executive offices in companies.
• School offices that route calls to teachers and deputies.

Compatibility and mounting

The GRP2604P works with any SIP PBX, including Grandstream UCM6300 and Yeastar P-Series, with extension status shown on the BLF keys from the PBX. It wall-mounts with the GRP-WM-A bracket, which Grandstream lists as compatible with the GRP2604. It measures 214 × 206 × 68 mm and weighs 790 g.

GRP2604P or GRP2602P?

The GRP2602P has 2 lines, 4 accounts, a 2.41-inch screen and 10/100 ports, with no BLF keys, which suits a staff desk. The GRP2604P adds a third line, 6 accounts, 10 BLF keys, a 2.7-inch screen and Gigabit ports, so pick it for whoever transfers calls all day.

Frequently Asked Questions

Does the GRP2604P come with a power adapter?

No. The P model runs on PoE and ships without an adapter. Without a PoE switch, add the Grandstream 5V/0.6A PSU.

What are the 10 BLF keys for?

They show colleagues' extension status (free or busy) and call or transfer to them with one press; they can also be set as speed dial or call park.

Does it work with Grandstream UCM or Yeastar PBXs?

Yes. It works with any SIP PBX, including UCM6300 and Yeastar P-Series.

Specifications

• Model: GRP2604P
• Series: GRP2600, named by Grandstream 3-Line Essential Lite IP Phone
• Lines: 3 line keys with dual-color LEDs
• SIP accounts: 6
• BLF keys: 10 BLF keys (paper labels in the box)
• Display: 132×64 (2.7") backlit graphical LCD
• Keys: 4 XML-programmable context-sensitive softkeys, 5 navigation keys, 8 fixed keys: MESSAGE (with LED), TRANSFER, HEADSET, MUTE, SEND/REDIAL, SPEAKERPHONE, VOL+, VOL-
• Network: Dual switched 10/100/1000 Mbps Gigabit ports, integrated PoE
• PoE: IEEE 802.3af; IEEE 802.3az (EEE)
• Wi-Fi: No
• Auxiliary port: 1 × RJ9 headset jack, EHS compatible (Plantronics, Jabra, Sennheiser and more)
• Audio: HD wideband handset and full-duplex speakerphone, Noise Shield and AI noise reduction
• Voice codecs: G.729A/B, G.711 μ/a-law, G.726, G.722 (wideband), G.723.1, iLBC, Opus
• DTMF: In-band and out-of-band (RFC2833, SIP INFO)
• Telephony features: Hold, transfer, forward, 5-way conference, call park, call pickup, SCA/BLA, call waiting, off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot-desking, personalized ringtones and music on hold, server redundancy and failover
• Phonebook and call log: Downloadable phonebook (XML, LDAP) up to 2,000 entries; call log up to 800 records
• Protocols: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, HTTP/HTTPS, ARP, ICMP, DNS (A, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, SNMP, 802.1X, TLS, SRTP, IPv6
• QoS: Layer 2 (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS)
• Security: TLS 1.3, HTTPS web access, SIP over TLS with mutual certificate validation, SHA-256/SHA-512 authentication, DTLS-SRTP and SDES-SRTP, 802.1X, secure boot, dual firmware images, encrypted data storage
• Languages: 26 languages including Arabic and English
• Upgrade and provisioning: Firmware upgrade via FTP, TFTP, HTTP, HTTPS; mass provisioning via GDMS, TR-069 or AES-encrypted XML file
• Stand / wall mount: Base stand with two angles (39° and 45°); wall-mountable (GRP-WM-A bracket sold separately)
• Power: PoE, or adapter: Input 100–240 V AC, 50–60 Hz; output 5 V DC, 600 mA (not included)
• In the box: Phone, handset with cord, base stand, network cable, quick installation guide, BLF labels (no power adapter)
• Dimensions: 214 × 206 × 68 mm with handset
• Weight: 790 g (1,100 g packed)
• Operating temperature: 0 to 40°C
• Storage temperature: -10 to 60°C
• Humidity: 10–90% non-condensing
• Compliance: FCC Part 15 Class B and Part 68 HAC; CE (EN 55032, EN 55035, EN 61000-3-2, EN 61000-3-3, EN 62368-1); RCM; IC (ICES-003, CS-03)

Features

• 10 BLF keys: see at a glance who is busy or free, and transfer with one press.
• 3 line keys, 6 SIP accounts: three calls visible on the keys at the same time.
• 2.7-inch backlit LCD (132×64): more room for caller names and menus than the GRP2602.
• Dual Gigabit ports with 802.3af PoE: one cable for power and data, PC at 1000 Mbps.
• Two-angle stand at 39° and 45°: tilt the phone to suit the reception counter height.