The UCA-5520 brings best of both worlds - Voice over IP (VoIP) and Plain Old Telephony - together in one powerful communication system! State-of-the-art phone system with support for 20 to 200+ extensions, 2000+ hours of voicemail storage, Conferencing, Auto-Attendant, Call Queues, Ring Groups, Paging & Intercom, all standard telephony features and advanced VoIP features.




