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Cisco VG350 Voice Gateway Hardware Installation Guide
OL-25970-01
Chapter 2 Cisco Double-Wide High Density Analog Service Modules
Double-Wide High Density Analog Service Module Overview
Installing SM-D-48FXS-E
Install the SM-D-72FXS according to the instructions in the Installing Cisco Interface Cards in Cisco
Access Routers document.
Grounding
Ensure that the equipment you are working with is properly grounded according to the instructions in
the Installing Cisco Interface Cards in Cisco Access Routers document.
Cables
The VG350 Voice Gateway uses RJ-21 cables to connect to a distribution box.
Warning
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.
Statement 1021
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first.
Statement 1026
Warning
This equipment contains a ring signal generator (ringer), which is a source of hazardous voltage. Do
not touch the RJ-11 (phone) port wires (conductors), the conductors of a cable connected to the RJ-11
port, or the associated circuit-board when the ringer is active. The ringer is activated by an incoming
call.
Statement 1042
Warning
For connections outside the building where the equipment is installed, the following ports must be
connected through an approved network termination unit with integral circuit protection: FXS.
Statement 1044
Connecting SM-D-48FXS-E
To connect the SM-D-48FXS-E, follow the these steps:
Step 1 Confirm that the router is turned off.
Step 2 Connect one end of the straight-through RJ-21 cable to an RJ-21 distribution box.
Step 3 Connect the distribution box ports to a telephone or FAX machine using an RJ-11 cable.
Step 4 Power up the router.