Grandstream GHP610 Hotel Phone, 2 Line IP Phone, 2 SIP Accounts, HD Audio, Powerable Over PoE, White Colour, 1Yr WtyCompact Hotel Phone GHP610 The GHP611 are compact IP phones that provide an HD speaker on the handset, 2 SIP accounts lines, 10 speed dial keys and 3 programmable keys. Part of the GHP Series of Hotel Phones, these simple IP phones are also ideal for hospitals, apartments, dormitories, retail and more. This Series provides 3 way voice conferencing, supports full band OPUS voice codec and features an advanced jitter resilience algorithm that tolerates