Selects the physical DS3 framing method to be used in this board. Applicable only to the TP-2810. 0 = DS3 Clock is recovered from the line 1 = DS3 trunk clock source is provided by the board's internal clock 2 = Clock is taken from the local PLL which is not synchronized with any other clock. Access: Offline. AC INI-Param: DS3CLOCKSOURCE