I have wierd problem. I haven't found the answer searching the list. The problem I am having is after I pickup the receiver, then hangup the phone gives a quick ring. I am using a rhino channelbank. Again found nothing via search. I have also tried different phones and different ports all with the same result. I also don't have the problem with my TDM400 card. So I assume it is the channelbank but wanted to check here first if it a configuration issue I am missing. Thanks, Matt