Link State

The operational status of the link:

• up The link is established and is capable of supporting the application. This is the normal operational state.

• down The link is physically down.

• endpoint not administered An output device has not been assigned on the CDR system parameters screen.

Number of Retries

The number of times the switch has tried to set up the link.

Date & Time

The last time the CDR link went up or down.

Forward Seq. No

A counter which increments with every Session Protocol Data Unit (SPDU) sent from the switch to the CDR adjunct. Both the primary and secondary CDR outputs have independent Forward Sequence numbers.

Backward Seq. No

A counter that indicates the number of the next Session Protocol Data Unit (SPDU) that is expected from the CDR adjunct. Both the primary and the secondary CDR outputs have independent Backward Sequence numbers.

CDR Buffer % Full

When the switch produces a CDR record that cannot be immediately transmitted to the CDR adjunct, that record is placed in the CDR buffer. This percentage indicates how full the CDR buffer is at any point in time. If the switch, the CDR adjunct, and the IP link that interconnects them are all working properly, this number should be zero or very close.

Reason Code

Why the CDR link (primary or secondary) last changed from up to down or vice versa. Values when CDR is administered are:

• CDR connection is closed

• CDR connection is closed

• CDR Output mode is blank

• Data write failure

• EIA port Bit rate changes

• Survivable Remote Server is inactive

• Maintenance Busy

• Path is destroyed by COM

• Primary extension is changed

• Queue for primary CDR is full

• Secondary extension is changed