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Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation Guide
Chapter 3 Installing
Connecting a Router to the Network
Connecting a Cable to the Output 10-Mhz or 1-PPS Interface
Step 1 Connect one end of a shielded mini-coax cable to the Slave unit.
Step 2 Connect the other end of the shielded mini-coax cable to the 10-Mhz or 1-PPS port on the RSP of the
Cisco ASR-920-24SZ-IM Router.
Connecting a Cable to the ToD Interface
Step 1 Connect one end of a straight-through Ethernet cable to the GPS unit.
Step 2 Connect the other end of the straight-through Ethernet cable to the ToD or 1-PPS port on the RSP of the
Cisco ASR-920-24SZ-IM Router.
Note For instructions on how to configure clocking, see the Cisco ASR 920 Series Aggregation Services
Routers Configuration Guide.
Warning
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the ToD ports only to intra-building or unexposed wiring or cable. The intrabuilding cable
must be shielded and the shield must be grounded at both ends. The intra-building port(s) of the
equipment or subassembly must not be metallically connected to interfaces that connect to the OSP
or its wiring. These interfaces are designed for use as intra-building interfaces only (Type 2 or Type 4
ports as described in GR-1089-CORE) and require isolation from the exposed OSP cabling. The
addition of Primary Protectors is not sufficient protection in order to connect these interfaces
metallically to OSP wiring.
Note For more information about GPS-port pinouts, see Chapter 5, “Troubleshooting.”
Connecting Ethernet Cables
The Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router interface modules support
RJ-45 and Ethernet SFP ports. For instructions on how to connect cables to Ethernet SFP ports, see the
Connecting Cables to SFP Modules, page 3-58.
The RJ-45 port supports standard straight-through and crossover Category 5 unshielded twisted-pair
(UTP) cables. Cisco does not supply Category 5 UTP cables; these cables are available commercially.
Warning
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the Gigabit Ethernet ports only to intra-building or unexposed wiring or cable. The
intrabuilding cable must be shielded and the shield must be grounded at both ends. The intra-building
port(s) of the equipment or subassembly must not be metallically connected to interfaces that connect
to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces only (Type
2 or Type 4 ports as described in GR-1089-CORE) and require isolation from the exposed OSP cabling.
The addition of Primary Protectors is not sufficient protection in order to connect these interfaces
metallically to OSP wiring.
Follow these steps to connect a cable to a copper Gigabit Ethernet port:
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