I tried to do the following with a VWIC-2MFT-T1 card... controller T1 0/0 framing esf crc-threshold 320 clock source internal linecode b8zs channel-group 0 timeslots 1-12 speed 64 channel-group 1 timeslots 13-24 speed 64 .... in hopes of creating two serial interfaces (serial0/0:0 and serial0/0:1) of 768k each running parallel to each other. I want to put some traffic on one channel-group and some traffic on the other. This is pretty much a QoS thing. I know there are a couple of other ways to do this but I thought I would give this a shot. However after I enter the second channel-group command I get the following error... %Insufficient resources to create channel group Is this an IOS problem (I am running IP Plus Version 12.3(5b))? I wouldn't think that I would need the VWIC-2MFT-T1-DI card for something like this but maybe I do? Or I am trying to do the impossible and should suck it up and do some actual QoS configuration. richard field