Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 3COM 3CR29210 does work with ATTbi in Oakland, CA

I have ATTBI in Oakland, CA and had previously tried without success to get two different Linksys modems to connect to the cable. Having read all of the reviews for the 3com product, I decided to try it. Initially the status light was a steady red, indicating that it could not sync to the cable, and I was unable to register it through sas.r2.attbi.com (which I also tried to do over a separate dial-up modem). ATT scheduled a technician to come next week. I decided to try inserting an attenuator in the line, and voila! everything now works. The initial speed was very slow -- 22 kbps, but, as I had read, resetting it took care of that, and now it runs as fast as 1700 kbps.