24 Line Ring Shaper - Booster. 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 Features True Sine wave ring signal output Boosts ring to 4 REN Caller ID compatible Easy RJ-21X installation Compatible with distinctive ringing services Will not affect normal line operation Reshapes troublesome square wave ringing Not compatible with pulse dialing.