COMPACT HOTEL PHONE - BLACKGR GHP611 The GHP610 GHP610W and GHP611 GHP611W 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 includes 2 models with integrated dual band Wi Fi support GHP610W and GHP611W provides 3 way voice conferencing supports full band OPUS