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  4. Grandstream GXP2135 8-Line IP Phone, 4 SIP Accounts, 2.8" Color LCD, 32 BLF Keys, Bluetooth
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Grandstream GXP2135 8-Line IP Phone, 4 SIP Accounts, 2.8" Color LCD, 32 BLF Keys, Bluetooth

Part number GXP2135
  • 8 lines, 8 dual-color line keys (with 4 SIP accounts), 4 XML programmable context-sensitive soft keys
  • 32 digitally programmable and customizable BLF/speed-dial keys
  • Dual switched, auto-sensing 10/100/1000 Mbps Gigabit ports, built-in PoE
  • Built-in Bluetooth for syncing headsets and mobile devices for contact books, calendars & call transferring
  • HD audio on the handset and speakerphone; full duplex speakerphone
  • Supports EHS compatible Plantronics headsets
  • 4-way audio conferencing for easy conference calls
  • Use with Grandstream's UCM series IP PBX for Zero-Config provisioning, 1-touch call recording & more
IP Phone SIP PoE Gigabit Bluetooth Color Screen HD Voice Business Phone Grandstream
Price
⃁ 433.13 ⃁ 433.13 ⃁ 563.98 Save 23%
⃁ 433.13 ⃁ 563.98
(Tax excluded)
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  • Delivery within 4–10 business days across Saudi Arabia
  • Warranty according to the manufacturer
  • Tax invoice with every order
  • Technical support before and after purchase

Not sure this model fits your setup? Read the buying guide

Official datasheetGrandstream_GXP2135_Datasheet.pdf Download

Overview of Grandstream GXP2135

The Grandstream GXP2135 is a sleek, enterprise-grade IP phone built for busy users who manage medium to heavy call volumes. It offers 8 lines/line keys with 4 SIP accounts, a 2.8 inch (320x240) color LCD, full HD audio and up to 32 digital on-screen BLF/speed-dial keys to monitor colleagues and transfer calls quickly. Dual Gigabit ports with integrated PoE and built-in Bluetooth for headsets and mobile devices add speed and flexibility, while SRTP/TLS encryption and zero-config provisioning with Grandstream UCM IP PBXs simplify deployment. It suits receptionists, sales teams and call-intensive desks in offices, hotels and clinics.

Technical Specifications – Grandstream GXP2135

Network

Protocols/StandardsSIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPV6, CDP/SNMP/RTCP-XR
Network InterfacesDual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE

Display & Keys

Graphic Display2.8 inch (320x240) TFT color LCD

Network

BluetoothYes, integrated

Display & Keys

Lines / SIP Accounts8 lines, 4 SIP accounts
Feature Keys8 line keys with up to 4 SIP accounts, 4 XML programmable context sensitive softkeys, 5 navigation/menu keys, 11 dedicated function keys for: MESSAGE (with LED indicator), PHONEBOOK, TRANSFER, CONFERENCE, HOLD, HEADSET, MUTE, SEND/REDIAL, SPEAKERPHONE, VOL+, VOL-
BLF KeysUp to 32 digital, on-screen speed dial/BLF keys

Audio

Voice CodecsSupport for G.729A/B, G.711µ/a-law, G.726, G.722 (wide-band), G723.1, iLBC, Opus, in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC
Auxiliary PortsRJ9 headset jack (allowing EHS with Plantronics headsets)

Telephony Features

Telephony FeaturesHold, transfer, forward, 4-way conference, call park, call pickup, shared-call-appearance (SCA)/bridged-line-appearance (BLA), downloadable phonebook (XML, LDAP, up to 2000 items), call waiting, call log (up to 500 records), XML customization of screen, 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

Audio

HD AudioYes, HD handset and speakerphone with support for wideband audio

Physical

Base StandYes, 2 angle positions available, wall mountable (wall mount sold separately)

Network

QoSLayer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS

Security & Management

SecurityUser and administrator level passwords, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, SRTP, TLS, 802.1x media access control
Multi-languageEnglish, German, Italian, French, Spanish, Portuguese, Russian, Croatian, simplified and traditional Chinese, Korean, Japanese and more
Upgrade/ProvisioningFirmware upgrade via TFTP/HTTP/HTTPS, mass provisioning using TR-069 or AES encrypted XML configuration file, FTP/FTPS

Power

Power AdapterUniversal power adapter included: Input 100-240V; Output +12V, 0.5A
PoEIntegrated Power-over-Ethernet (802.3af)
Max Power Consumption6.4W (power adapter) or 6.49W (PoE)

Physical

Dimensions201mm (W) x 193mm (L) x 85mm (H)
Unit Weight0.85kg
Package Weight1.12kg

Environment

Operating Temperature0°C to 40°C
Storage Temperature-10°C to 60°C
Humidity10% to 90% Non-condensing

Physical

Package ContentGXP2135 phone, handset with cord, base stand, universal power supply, network cable, Quick Installation Guide, GPL license

Compliance

FCCPart 15 (CFR 47) Class B
CEEN55022 Class B; EN55024 Class B; EN61000-3-2; EN61000-3-3; EN60950-1
RCMAS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950.1

Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.

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PRACTICAL ANSWERS

IP phone questions

How do I choose an IP phone for an employee?

Start with the person’s daily call workflow, required keys, headset use and desk connectivity. Check the exact model against the PBX and provisioning method rather than selecting only by screen size or appearance.

Does an IP phone need a separate power adapter?

Check the phone’s supported power options, what is included in the package and the capabilities of the connected switch. Confirm that the complete proposed arrangement can power every phone, not just a single test device.

Will my headset work with the new phone?

Compare the headset and phone model numbers, connector type and any required adapter or call-control support. Ask to test answering, ending and muting a call with the intended combination before equipping a team.

Can a phone be used by a remote employee?

Confirm the PBX’s supported remote deployment method and the employee’s network requirements. Plan secure provisioning and support responsibilities; do not expose administration interfaces or assume a phone can be moved without configuration.

How should I compare phone models for a reception desk?

List the extensions the receptionist handles, the required transfer workflow and any need for expansion keys or a headset. Evaluate the full workflow with the PBX, including the features actually licensed and supported.

What should I check before deploying many IP phones?

Test a small representative group first, then review network ports, power, provisioning, user labels and the rollback plan. Keep an inventory linking each physical device to its intended user or location.

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