Grandstream Carrier-Grade IP Phone POE Dual LCD qsfp+ you should use a surge

you should use a surge protector on both ends of long cables

an SFP port

With wire-speed switching performance and advanced Layer 2 management features

Storage condition Temperature: -40°F to 176°F (-40°C~80°C)

Grandstream Carrier-Grade IP Phone POE Dual LCD qsfp+ you should use a surgeThe GRP2614 is a 4 line carrier grade IP phone designed with zero touch provisioning for mass deployment and easy management. It features a sleek design and a suite of next generation features including dual LCD screens with 40 virtual multi purpose keys (VPKs), integrated Wi Fi, Bluetooth support, dual Gigabit ports and more. The GRP series includes carrier grade security features to provide enterprise level security, including secure boot, dual