Grandstream GXP2135 HD IP Phone

​The Grandstream GXP2135 is a high-performance IP phone designed for professionals managing medium to high call volumes. With its robust feature set, including HD audio, integrated Bluetooth, and extensive programmable keys, it enhances communication efficiency in enterprise environments.​

📞 Key Specifications

• Lines & SIP Accounts: Supports up to 8 lines and 4 SIP accounts ​

• Display: 2.8-inch (320×240) TFT color LCD ​

• Programmable Keys:

  • 32 digitally programmable BLF/speed-dial keys

  • 4 XML programmable context-sensitive soft keys ​

• Audio Features:

  • HD audio on handset and speakerphone

  • Full-duplex speakerphone

  • 4-way audio conferencing ​

• Connectivity:

  • Dual auto-sensing Gigabit Ethernet ports with integrated PoE

  • Built-in Bluetooth for syncing headsets and mobile devices

  • RJ9 headset jack with EHS support for Plantronics headsets ​

• Voice Codecs: Supports G.729A/B, G.711µ/a-law, G.726, G.722 (wide-band), G.723.1, iLBC, Opus ​

• Telephony Features:

  • Call hold, transfer, forward, call park, call pickup

  • Shared-call appearance (SCA)/bridged-line appearance (BLA)

  • Downloadable phonebook (XML, LDAP) with up to 2000 entries

  • Call waiting, call log (up to 500 records)

  • Auto-answer, click-to-dial, hot desking

  • Personalized music ringtones and music on hold

  • Server redundancy and fail-over ​

• Security:

  • SRTP and TLS encryption

  • 256-bit AES encrypted configuration files

  • 802.1x media access control ​

• Provisioning & Management:

  • Supports zero-configuration with Grandstream’s UCM series IP PBXs

  • Encrypted XML files and TR-069 for mass deployment ​

• Physical Specifications

  • Dimensions: 201mm (W) x 193mm (L) x 85mm (H)

  • Weight: 0.85kg (unit), 1.12kg (package)

  • Wall-mountable with 2-angle adjustable stand ​

• Power:

  • Integrated Power-over-Ethernet (802.3af)

  • Universal power adapter included (Input: 100-240V; Output: +12V, 0.5A)

  • Maximum power consumption: 6.4W (adapter) or 6.49W (PoE) ​

• Environmental Conditions:

  • Operating temperature: 0°C to 40°C

  • Storage temperature: -10°C to 60°C

  • Humidity: 10% to 90% non-condensing

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