Folks, I think I may have resolved my own issue but I cannot test until tomorrow: On Thursday 24 April 2008 20:09:19 Barry O'Donovan wrote: > span=1,0,0,ccs,hdb3,crc4 ^ I.e. I have the timing source set to 0 ("the port will never be used as a source of timing. This is appropriate when you know the far end should always be a slave to you") where as it should be 1. -- Kind regards, Barry O'Donovan