Cisco :: Using Coax Cable Between MGX And 3845 Router

Using particular coax cable between a MGX and a Cisco 3845 router. The router has a NM-1A-T3/E3 network module (most likely since the label that the guys onsite saw at the back of the router says 1A-T3.The MGX meanwhile has a AXSME-16T3E3 front card and a SMB 8TE (?) back card, based on what our client said. There is presently a miniBNC-to-BNC coax cable connecting the MGX to the 3845, muck like the picture below. There are CRC errors on the ATM interface and the client would like to replace this cable. Unfortunately, I cannot find the exact Cisco cable for this.