After you have grounded the T640 Core Router, you can connect the following external devices:
See Connecting the T640 Router to a Management Console or Auxiliary Device
See Connecting the T640 Router to a Management Console or Auxiliary Device.
See Connecting the T640 Router to a Network for Out-of-Band Management.
See Connecting the T640 Router to an External Alarm-Reporting Device.
See Connecting the T640 Router to an External Clocking Device.
![]() | Note: The external clock inputs on the SCG with DB-9 ports are not supported. |