Cabletron Systems SmartSwitch 6000 User Manual page 228

Logical Channel
LP/Port
11-12
is a logical link between the node and the subscriber. The physical line may have a
number of logical channels. An LCN assigned to a port in a PVC record must be lower
than the lowest LCN specified for any SVC subscriber on the same port.
specifies the LP and port at each end of the PVC.
FRX/FRM 3.3 User Guide, Rev 04