SMC Networks VDSL2 manual Connecting to the Punch-down Blocks

MAKING NETWORK CONNECTIONS

each end. Typically 24 AWG (100 ohm)/0.5 mm wire provides better performance than 26 AWG (100 ohm)/0.5 mm wire.

Connecting to the Punch-down Blocks

The switch connects directly to the PBX and building’s phone-line punch-down block with RJ-21 connectors. Follow the steps listed below to connect the switch.

1.Connect one RJ-21 cable from the PBX/MDF to the RJ-21 connector on the rear of the switch labeled “POTS.”

2.Connect another RJ-21 cable from the punch-down block to the RJ-21 connector on the rear of the switch labeled “VDSL.” Note that the connection to the punch down block usually requires punching down the free wires from the RJ-21 cable.

The RJ-21 ports on punch-down blocks must be wired to match the pin assignments of ports on the back of the switch. To ensure that your cables are properly wired, refer to “RJ-21 Port Pin Assignments” on page B-8.

Note: If you are using a patch panel, connect the RJ-21 ports on the back of the switch directly to the corresponding ports on the patch panel, and then manually wire each pair (up to 16) from the patch panel to the punch-down blocks.

Twisted-pair Connection to CPE

Free	RJ-21	Punch-down Block
Wiring		with RJ-21 Connector
	Cable

	RJ-21
Building’s Phone-line	Cable
Punch-down Block	PBX/MDF
	Connector
Console
	TigerAccess	EE Switch
100-240V 50- 60Hz 1A

PBX

Figure 4-1 Connecting to the Punch-down Blocks

4-2