I have a Nortel system that is connected via tie lines to a Cisco Call Manager. As people migrate from the Nortel to the CM I delete their phones and create a CDP of their DID number and point it to the tie line between the two systems. I am geting ERR 5132 codes taht say somthing about the possibility of looping. Is this because the DID numbers that nave been converted to CDP's come in on the DID/DOD trunk group then get routed over to the Nortel/Cisco trunk group? Is there a way to stop the errors? Doesn't ssem to be service affecting at this point but I'm afraid as the numbers of CDP's will be increasing it may cause a problem.