GRP2602W - IP PHONE WITH WIFI. As a part of the GRP series of Carrier-Grade IP Phones, the GRP2600 series of Essential IP phones are equipped for zero-touch provisioning for mass deployment and easy management. The line features a sleek design and a suite of next-generation features including 5-way voice conferencing, EHS support, and multi-language support. The GRP series includes carrier-grade security features to provide enterprise-level security, including secure-boot, dual-firmware images, and encrypted data storage