Yes indeed. I had the pleasure to work for Ascend Communications for 4 years. The bulk of our business was the Ascend Max TNT that could terminate dozens of PRI lines into hundreds of digital modems. They were the bread and butter for early ISPs. For BRI lines, there was the Pipeline 50, remarkable little box with a BRI input and Ethernet output. Good times.

I was a big MaxTNT customer. The cooling on those were interesting. Also worked with the earlier Cascade BSTDX 9000 and CBX 500.