I'm an individual with a T1 installation in process of being installed. The Telco installed the T1 demarc. AT&T sent the Cisco 1841 router, 56k console, and cableling. BUT, the cable connecting the modem (or CSU portion of it) to the demarc appears to be a Ethernet cable with two RJ45 connectors. The demarc does not have a receptacle for it. See attached photo of demarc box. My research seems to indicate I need to add a RJ48x adapter.
How do I make the connection? If I need to added a RJ48x, then what is the wiring schematic.
Editorially: it would have been a simple matter for the Telco to have installed it, it seems.