Boost Ringing Power and Reshape Ring Signal to a True Sine Wave product:RG-224 The RG-224 ring generator is designed to reshape and increase the ringing power of up to 24 telephone lines, PABX extensions, or any other telecom devices which provides ringing. The RG-224 duplicates the incoming ring cadence allowing it to be compatible with custom ringing features. The RG-224 is capable of ringing four 1 REN or eight 0.5 REN telephones and does not affect normal operation of the telephone line or features, such as caller ID and call waiting. Applications Boosts ringing power of the Cisco VG 224 twenty four line voice gateway Boost ring power on telephone lines or analog PABX/KSU stations that are weak or fail Reshapes troublesome distorted ringing signals Key Feature True Sine wave ring signal output Boosts ring to 4 REN Caller ID compatible Easy RJ-21X installation Will not affect normal line operation Reshapes troublesome square wave ringing Not compatible with pulse dialing Specifications Power: 120V AC / 13.8V AC 1.25A UL listed adapter provided Shipping Weight: 1.2kg (2.8lbs) Environmental: 0 C to 32 C (32 F to 90 F) with 5% to 95% noncondensing humidity Incoming Ring Detection: 20-150 VAC Ring Generator: 90 VAC nominal, 55 VAC @ 4 REN load Ringwave Shape: Sine wave Connections: (2) RJ-21X female connectors