From: Christopher Saleem, 103423,250 TO: Roger Prenger, INTERNET:[email protected] DATE: 11/21/96 10:45 AM
RE: Copy of: Part 68, Telco Power Draw Hi Roger, The max power that a single line loop start device is tested against in FCC part 68 is 42.5 Vdc at 24 mA, 52.5Vdc at 44 mA and 52.5Vdc at 131mA. The current drawn by your equipment must not decrease by more than 25 percent from its max value attained during this 5 second interval; unless your equipment is returned to the on-hook state during the 5 second interval . These tests are done for the Billing Protection requirements. The different current values used are to simulate line conditions at 1740 ohms, 1200 ohms, and 400 ohms. These tests are not done if your equipment drawns current which is equal or greater than a 200 ohms resistor connected across the Tip and Ring of the 2 wire loop simulator circuit. Christopher
