363-206-285
Administration and Provisioning
Issue 3 June 2001
8-51
When a new service is added to the ring, use the normal procedures to add
service to all nodes of a ring except to the drop and continue nodes. Before a drop
and continue cross-connection can be made to a low-speed function unit, the slots
must be equipped with either STS1E low-speed circuit packs or OC-3 OLIUs. This
circuit pack type is the interface for drop and continue applications. The cross-
connection command for drop and continue at CO 1 (see Figure 8-4) has two
additional parameters. They are cross-connection type (cct) and ring
identification (ring). The cct is dc for drop and continue. The parameter ring
for the ent-crs-sts1 or ent-crs-vt1 command defines the direction of the
continued signal. The counterclockwise ring is called m2 because it is always
connected to main-2 OLIU. Similarly, the clockwise ring is called m1 because it is
always connected to main-1 OLIU. At CO 1 the parameter for ring is m2,which
means to continue the signal on Ring 2 toward CO 2. For VT1.5 cross-
connections, once the first VT drop and continue cross-connection defines the
ring direction, all other VT drop and continue cross-connections at that node are
forced to use that ring rotation.
Similarly at CO 2, the other drop and continue node, the cross-connection
command requires the same two parameters. The cct parameter is dc and the
value for ring is m1, which means to continue the signal on Ring 1 toward CO 1.
To Next Page
Loading...
Need help?
General
