Grandstream GRP2636 12-Line IP Phone with 24 MPK Keys, 4.3-inch Screen

The Grandstream GRP2636 combines 12 line keys, 16 SIP accounts and 24 illuminated MPK keys with a 4.3-inch color screen, dual Gigabit PoE ports, dual-band Wi-Fi and Bluetooth. It is built for receptionists and assistants who transfer calls to many colleagues all day.

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The Grandstream GRP2636 is made for the desk that handles most of a company's incoming calls, with 24 physical, illuminated MPK keys sitting beside 12 line keys and 16 SIP accounts. A receptionist sees every colleague's status at a glance and transfers with a single press, while the 4.3-inch color display keeps caller names and menus readable.

Grandstream GRP2636 specifications

It shares the GRP2634's 220x210x82 mm body but steps up in almost every area:

• 12 dual-color line keys and up to 16 SIP accounts.
• 24 MPK keys with a paper strip for colleague names.
• 4.3-inch TFT color display at 480x272.
• 5 XML-programmable softkeys and 5 navigation keys.
• Dual Gigabit ports with PoE, dual-band Wi-Fi and built-in Bluetooth.
• 2,000-entry phonebook and 5-way conferencing.

24 dedicated keys for the front desk

On smaller phones you scroll through screen pages to find a colleague. On the GRP2636 each MPK key belongs to one person, and its LED shows whether they are free, on a call or ringing. Press it to transfer or pick up, and write the names on the supplied label strip so a new hire is not lost in week one.

A clearer screen and your logo on the front

At 4.3 inches the display is noticeably larger than the GRP2634's 2.8-inch screen, which helps when reading long names or details of a transferred call. Screen content can be customized with XML, and the faceplate is swappable for a company logo, a nice touch for hotels and firms that care how the reception desk looks.

Network and headsets

Both network ports run at 10/100/1000 Mbps, the phone draws 802.3af PoE, and a 12V adapter is included. Where pulling a cable is hard, it connects over 2.4/5 GHz Wi-Fi, with Wi-Fi 6 on hardware version 5.0 and later. For staff who live on the phone, it supports Bluetooth headsets, Grandstream GUV USB headsets and an RJ9 jack with EHS for Plantronics.

Where it fits in Saudi Arabia

• Hotel front desks in Makkah and Madinah transferring guests to housekeeping, dining and maintenance.
• Clinic and medical-complex receptions tracking doctors' and nurses' offices.
• Executive offices where one assistant supports several managers.
• Shared business centers that need a separate SIP account for each tenant company.

Compatibility and management

The GRP2636 works with Grandstream UCM PBXs and other systems that follow standard SIP (RFC3261). Mass setup runs through GDMS, TR-069 or AES-encrypted XML files, and security includes secure boot and dual firmware images.

GRP2636 or GRP2650?

The GRP2650 moves up to 14 lines, a 5-inch 1280x720 display and support for up to four GBX20 modules, but its colleague keys are virtual (56 VPK on screen). Stay with the GRP2636 if 24 physical keys are enough, and move to the GRP2650 when you monitor more people than that. Compared with the GRP2634, the GRP2636 adds four lines and 14 more MPK keys.

Frequently Asked Questions

How many BLF keys does the GRP2636 have?

24 physical, illuminated MPK keys that can be set as BLF or speed dial, in addition to 12 line keys.

Does the GRP2636 support the GBX20 module?

No. The official datasheet lists no expansion module support. Choose the GRP2650 or GRP2670 if you need a GBX20.

Is a power adapter included?

Yes, a 12V/1A adapter is in the box. You can also power it from an 802.3af PoE switch.

Specifications

• Model: GRP2636
• Series: GRP2600 Professional (GRP Carrier-Grade IP Phones)
• Lines and SIP accounts: 12 line keys, up to 16 SIP accounts
• Programmable keys: 24 MPK keys with paper label slot
• Other keys: 5 XML-programmable softkeys, 5 navigation keys, dedicated function keys
• Display: 4.3-inch TFT color LCD, 480x272
• Network ports: Dual switched auto-sensing 10/100/1000 Mbps ports with integrated PoE
• Wi-Fi: Dual-band 2.4/5 GHz Wi-Fi 6 (802.11a/b/g/n/ac/ax), hardware version 5.0 and above
• Bluetooth: Integrated
• Auxiliary ports: RJ9 headset jack with EHS for Plantronics, USB for Grandstream GUV and other USB headsets
• HD audio: HD wideband handset and speakerphone, dual microphones, full-duplex speakerphone, Noise Shield technology
• Extension module: Not supported
• Protocols: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A, SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6
• Voice codecs: G.729A/B, G.711 µ/a-law, G.726, G.722 (wideband), G.723, iLBC, Opus; in-band and out-of-band DTMF (in-audio, RFC2833, SIP INFO)
• Telephony features: Hold, transfer, forward, 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 fail-over
• Phonebook and call log: XML/LDAP phonebook up to 2,000 entries, call log up to 2,000 records
• Conference: 5-way
• QoS: Layer 2 (802.1Q, 802.1p), 802.11e (WMM), Layer 3 (ToS, DiffServ, MPLS)
• Security: User and admin passwords, MD5 and MD5-sess authentication, 256-bit AES encrypted configuration file, SRTP, TLS, 802.1x, secure boot, dual firmware images, encrypted data storage
• Languages: English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, Chinese, Korean, Japanese and more
• Upgrade and provisioning: Firmware upgrade via FTP/TFTP/TFTPS/HTTP/HTTPS; mass provisioning via GDMS, TR-069 or AES-encrypted XML file
• Stand and mounting: Stand with 2 angle positions; wall-mountable (mount sold separately)
• Temperature and humidity: Operating 0 to 40°C, storage -10 to 60°C, humidity 10% to 90% non-condensing
• Power: 12V/1A adapter (100-240V input), IEEE 802.3af PoE, IEEE 802.3az
• Dimensions: 220 x 210 x 82 mm
• Weight: 880 g unit, 1260 g package
• Compliance: FCC (Part 15 Class B, Subparts C and E, Part 68 HAC), CE, IC, RCM, UKCA
• Other: Swappable faceplate for logo customization, XML screen customization, GDMS management
• In the box: Phone, handset with cord, phone stand, 12V power adapter, network cable, quick installation guide, GPL license

Features

• 24 MPK keys with a paper label slot: monitor 24 extensions on real buttons and transfer with one press.
• 12 line keys and 16 SIP accounts: enough lines to answer for several departments or companies on one phone.
• 4.3-inch 480x272 color screen: caller names, line status and menus stay easy to read.
• Dual Gigabit ports with 802.3af PoE: runs off a PoE switch and passes full Gigabit speed to the desk PC.
• Dual-band Wi-Fi (Wi-Fi 6 on hardware 5.0 and later) and Bluetooth: flexible placement and wireless headsets.