Grandstream GXP2135 High‑Performance IP Phone

Key Features :

• 8 Lines / 4 SIP Accounts: Handle up to 8 concurrent lines with 4 separate SIP identities.

• 2.8″ Color LCD: 320×240 TFT display for easy navigation and call information.

• 32 Programmable BLF/Speed‑Dial Keys: On‑screen keys for presence, speed‑dial, and BLF monitoring.

• Built‑In PoE: Integrated IEEE 802.3af PoE support for simplified installation.

• Dual Gigabit Ethernet: Two 10/100/1000 Mbps auto‑sensing Ethernet ports.

• Bluetooth Connectivity: Sync headsets and mobile devices for contacts and calls.

• HD Audio & Full‑Duplex Speakerphone: Clear wideband audio quality with full‑duplex speakerphone.

• 4‑Way Audio Conferencing: Local multi‑party conferencing without extra hardware.

• EHS Headset Support: Works with Plantronics EHS headsets via RJ9.

• Automated Provisioning: TR‑069, UCM zero‑config, and encrypted XML provisioning make deployment easy.

• Enterprise‑Grade Security: Supports SIP over TLS/SRTP, 802.1x, and encrypted configs.

• USB Port: For data transfer or device extensions (varies by implementation).

Technical Specifications:

• Display: 2.8″ (320×240) TFT color LCD.

• Lines & Accounts: Up to 8 lines, 4 SIP accounts.

• Network: Dual 10/100/1000 Mbps Gigabit Ethernet with PoE.

• Audio Codecs: G.711µ/a, G.722 (wideband), G.726, G.729ab.

• Programmable Keys: Up to 32 BLF/speed‑dial on‑screen keys.

• Bluetooth: Yes, for headsets and contact sync.

• Headset: RJ9 with EHS support.

• Conferencing: 4‑way local audio.

• Security: TLS, SRTP, 802.1x, encrypted configuration.

• Management: Auto provisioning via TR‑069, UCM Zero‑Config.

• Ports: RJ9 headset, USB (host), dual Gigabit Ethernet.

• QoS: 802.1Q/P, ToS/DiffServ.