comcast business gatway password for 10.1.10.1

Good morning user_b4965c! Thank you so much for reaching out to us for help with the credentials to access the admin tool for the gateway. I found an excellent help article that gives us the details we need to acessing the admin tool. 
https://business.comcast.com/support/article/internet/setup-manage-comcast-wifi-business-wireless-gateway
The site shares that the username is cusadmin and to enter Network Key / Password for the password. This information would be on the back of bottom of the gateway. 

If you have changed the password at some point, you can use the reset button to factory reset the gateway which would bring the password back to the default listed on the gateway. 

Does the default password work for you?