The SR-IP is a SIP compliant PoE powered Loud Phone Ringer for providing loud ring and visual ring indication for SIP VoIP phone systems. When registered with a SIP server, the SR-IP will ring in one of 4 programmable ring patterns and flash a bright red LED upon ring detection. During ring detection the units internal relay contacts will also activate providing a trigger for a Viking Model SL -2 Strobe light or LPL-1 visual ring indicator. Equipped with a high efficiency Class D power amplifier and high quality loud speaker, the SR-IP is typically over 10 times louder than a telephone speaker. The advanced features of the SR-IP include programmable Automatic Gain Control (AGC) technology which automatically increases loud ring volume to compensate for background ambient noise. The AGC feature is ideal for • Loud Ringer for noisy or variable noise enviroments (offices, classrooms, factories).