The Grandstream GHP631 is a compact hotel IP phone featuring a 3.5″ high-resolution color LCD, support for 2 SIP accounts/2 lines, HD wideband voice with Opus codec, PoE support, USB Type-C charging port, 3-way conferencing, and GDMS cloud management — ideal for hotels, apartments, dormitories, hospitals, and hospitality deployments requiring a sleek, guest-friendly communication solution.