I also had no problems using the walled garden to activate the SB6121 for my business class account. I had also previously been able to activate an old DOCSIS 2 DCM202 using the walled garden after the second time my SMCD3G-CCR was reset and taken out of bridge mode by a Comcast CSR. Both the SB6121 and the DCM202 now show on my on-line equipment inventory despite the fact that Comcast does not have the DCM202 on their approved list for business class usage.
I also had problems returning my SMCD3G-CCR. My local office refused to accept it because they said that they did not handle business class accounts at that office. I tried to get business class phone support to provide an RMA and a shipping address, but that also was not allowed. The only way I was able to return it was for the phone support CSR to schedule a tech visit to pick it up. I got a $99.95 charge on my bill for that call, but I was able to complain and get it removed from the bill.--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.