Grandstream GXP2135 8-Line Enterprise Gigabit IP Phone

The Grandstream GXP2135 is a high-performance enterprise IP desk phone engineered for busy workers and call-intensive professionals. Featuring a 2.8-inch TFT color display, support for up to 8 lines and 4 SIP accounts, 32 digital on-screen BLF/speed-dial keys, and built-in Bluetooth, it combines high-speed Gigabit connectivity with flexible call management features.

Key Features & Benefits

• Up to 32 Digital Speed-Dial/BLF Keys: Access up to 32 digital, digitally programmable on-screen BLF and speed-dial keys across multiple pages for rapid contact access and extension monitoring.

• 8 Lines & 4 SIP Accounts: Supports 8 line keys and 4 independent SIP accounts with 4-way voice conferencing for efficient call handling.

• 2.8-Inch Color Display: Bright 320x240 TFT color screen provides clear visual navigation for contacts, line status, and call logs.

• Dual Gigabit Ethernet & PoE: Dual auto-sensing 10/100/1000 Mbps Gigabit network ports deliver high-speed data pass-through to a PC with integrated Power over Ethernet (PoE).

• Integrated Bluetooth & EHS: Built-in Bluetooth enables wireless headset pairing and mobile contact sync, while Electronic Hook Switch (EHS) support accommodates compatible Plantronics wired headsets.

• HD Audio Performance: Full HD audio quality on both the handset and full-duplex speakerphone ensures crisp, clear conversations.

Technical Specifications

• Display: 2.8-inch (320 x 240 pixels) TFT color LCD screen

• SIP Accounts & Lines: 8 line keys, up to 4 SIP accounts

• Programmable Keys: Up to 32 digital on-screen virtual BLF/speed-dial keys, 4 XML programmable context-sensitive soft keys

• Audio Conferencing: 4-way audio conferencing

• Network Interfaces: Dual switched auto-sensing Gigabit Ethernet (10/100/1000 Mbps) ports

• Wireless Connectivity: Integrated Bluetooth V2.1

• Headset Interface: RJ9 headset port with EHS support for Plantronics headsets

• Audio Features: HD Voice on handset and speakerphone, full-duplex speakerphone with advanced echo cancellation

• Power Source: Power over Ethernet (IEEE 802.3af Class 2) or included 12V/0.5A DC universal power supply

• Mounting: Dual-position desk stand; wall-mountable

Best For & Intent

• Best For: Busy office staff, administrative professionals, managers, and VirtualPBX users managing medium-to-heavy call volumes who need digital BLF keys, Gigabit speeds, and Bluetooth connectivity.

• Not Ideal For: Basic common area phones that do not require color screens or virtual BLF keys (consider the Grandstream GRP2602W instead), or operators requiring physical sidecar expansion modules (consider the Grandstream GXP2170 instead).