I posted further down about problems with our NM-6DM MICA modems on our 3640 not training with any client modems we have tried. Following advice received I upgraded the portware firmware to 2.7.3.0. This does not seem to have made any difference. I h...

I have set up a CISCO 3640 as a RAS. This has 4 ordinary async modems, an 8 port BRI (NM-8B-S/T) and 6 Digital Modems (NM-6DM). I can dial into the async modems fine and authenticate without any problems. However with the digital modems I can never t...