RCA IP110S VoIP Corded 2-Line Telephone VoIP Accessory Handset with Service (does not work independently, must be used with the IP160S) Operates on an internet service powered by Broadview Networks, only $19.95 per month without a contract! 2-line VoIP phone that includes big business features: auto attendant, voicemail, call transfers, 3-digit extension dialing Other Features: 2-Line Appearances, Full Duplex Speakerphone, Do Not Disturb, VIP Ringtones, 3-Way Call Conferencing, Voicemail through provider, Caller ID, Call Transfer, Selectable Ringtones, Visual Ringer, Phonebook/Directory Using RCA Voice Over Internet Service can save up to 50% versus traditional analog landline service costs for a business