Juniper G10 CMTS, Руководство по оборудованию

Страница: 126 / 210

Cable an HFC Connector Module or SIM
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
JUNOSg 3.0 G10 CMTS Hardware Guide 110
One possible deployment scenario for the upstream is to attach one node per upstream port
and to turn on one upstream interface per node. If one of the nodes reaches capacity due to
high penetration or heavy usage of bandwidth-intensive services, you can provision another
interface on that port.
To cable the downstream ports, following this procedure (see Figure 18 on page 51 and
Figure 20 on page 54 for port labeling):
1. Select the first node in the cable plant for assignment to the first of four downstream
ports.
2. Connect the coaxial cable associated with the first node to the F-connector labeled DS0
on the HFC Connector Module or the SIM.
3. If applicable, select the second, third, and fourth nodes in the cable plant for assignment
to the remaining three downstream ports.
4. If applicable, connect the coaxial cables associated with the second, third, and fourth
nodes to the F-connectors labeled
DS1 , DS2 , and DS3 on the HFC Connector Module or
the SIM.
To cable the upstream ports, follow this procedure:
1. Select the first node in the cable plant for assignment to the first of four upstream ports.
2. Connect the coaxial cable associated with the first node to the F-connector labeled US0
on the HFC Connector Module or the SIM.
3. If applicable, select the second, third, and fourth nodes in the cable plant for assignment
to the remaining three upstream ports.
4. If applicable, connect the coaxial cables associated with the second, third, and fourth
nodes to the F-connectors labeled
US1 , US2 , and US3 on the HFC Connector Module or
the SIM.
5. We recommend that you use cable organizers to dress and route all coaxial cables to
avoid obstructing the rear connections of the CMTS (see Figure 35 on page 112).
When you tighten a coaxial cable onto an F-connector, use
a 7/16 inch torque wrench to apply torque according to
SCTE standards.
A node can represent a single node or multiple nodes that
are combined.