Grandstream GXP2135 High‑End IP Phone | 8 Lines, 32 BLF Keys & Gigabit PoE
Grandstream GXP2135 – High‑Performance IP Phone for Call‑Intensive Roles
The Grandstream GXP2135 is an enterprise‑grade IP phone built for professionals who need advanced call control, extensive presence monitoring and effortless usability. Its modern design, high call capacity and rich feature set make it the ideal choice for call‑intensive workers, receptionists and managers.
Key Features
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8 Lines / 8 Line Keys with 4 SIP Accounts
Handles high call volumes with ease, allowing you to manage multiple calls simultaneously and stay productive throughout the day. -
2.8” TFT Colour LCD (320×240)
Bright, backlit display delivers crisp call information, contact lists and graphical menus for fast, intuitive operation. -
32 On‑Screen BLF / Speed‑Dial Keys
Monitor extension status (idle, ringing, busy) in real time and place calls with a single touch – ideal for receptionists and team leads. -
Dual Auto‑Sensing Gigabit Ethernet Ports with Integrated PoE
High‑speed wired performance and single‑cable power simplify installation and reduce desk clutter. Power class is IEEE 802.3af (PoE, 12.95 W). -
Built‑in Bluetooth
Sync mobile device contact books, calendars and Bluetooth headsets for true hands‑free operation. -
HD Audio & Full‑Duplex Speakerphone
Wideband codecs including G.722 (HD) and OPUS deliver crystal‑clear, natural conversations. The full‑duplex speakerphone with advanced acoustic echo cancellation ensures comfortable hands‑free calls. -
4‑Way Audio Conferencing
Start multi‑party discussions directly from the handset – no external bridge needed. -
EHS Support for Plantronics, Jabra & Sennheiser Headsets
Answer and end calls directly from your headset, improving efficiency for high‑volume users. -
Enterprise‑Grade Security
TLS and SRTP encryption protect calls and account credentials. The phone also supports secure boot, 256‑bit AES‑encrypted configuration files and 802.1X authentication. -
Zero‑Touch Provisioning
Fully compatible with GDMS (Grandstream Device Management System) , TR‑069, and encrypted XML config files for mass deployment and centralised management. -
Wall Mountable
Included wall mount bracket and adjustable base stand give flexible placement options.
Technical Specifications
Frequently Asked Questions
Q1: How many lines and SIP accounts does the Grandstream GXP2135 support? +
It supports 8 lines (line keys) with 4 SIP accounts – you can have four separate extensions or service providers, each with up to two call appearances.
Q2: How does the GXP2135 help with monitoring other extensions in a busy office? +
The 32 on‑screen BLF (Busy Lamp Field) keys show the real‑time status (idle, ringing, busy) of up to 32 colleagues. With a glance you see who is available before transferring a call, dramatically improving response times.
Q3: Does the phone work with Pakistan’s 220V power supply? +
Yes. The included universal AC adapter accepts 100‑240VAC, 50‑60Hz and runs seamlessly on Pakistan’s 220V/50Hz grid. Alternatively, plug the phone into a standard PoE switch that is itself 220V‑compatible, and it will draw power over the Ethernet cable.
Q4: Does the GXP2135 support high‑definition voice? +
Absolutely. It provides HD audio on both handset and speakerphone with support for wide‑band codecs including G.722 and OPUS, ensuring clear, natural conversations.