On Mon, 4 Jan 2010, Brooke Clarke wrote: > Hi John: > > Do the KG signals get XORed with the TTY output in the SB-2244? If not > then why are the KG signals in the SB-2244? > No, it's just a switchboard. What goes through it are not the KG signals but the signals to step the TDs at the synchronous rate that the crypto equipment wants.