A J-series device with one or more ISDN BRI ports has the following types of ISDN interfaces:
For information about interface names, see Network Interface Naming.
To configure ISDN BRI service on a J-series device, you configure the physical ISDN BRI interface and the logical dialer interface.
Each ISDN BRI port has two B-channels for transport, identified as bc-pim/0/port:1 and bc-pim/0/port:2, and one D-channel for control, identified as dc-pim/0/port. On ISDN BRI interfaces, the B-channels and D-channel have no configurable settings, but you can monitor them for interface status and statistics.