User guide

2-2 Encore Multi-port DSU/CSU User GuideÑJuly, 1997
2
Required Location
Install the DSU/CSU in a Restricted Access Area in accordance with safety regulation
in Articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70. An
example of a suitable area us a dedicated equipment room or closet that is clean, well-
ventilated and free of environmental extremes. Allow two to three feet of clearance
around the DSU/CSU to give you access during the installation.
Do not proceed with this installation if voltage is present between the transmit and
receive pairs of the network interface. You can ask the serving telephone company to
temporarily disconnect the simplex power for the installation. This is recommended for
your personal safety.
Check the Equipment
Make sure you have the following equipment ready for the installation:
¥ One of the following:
¥ Comm port cable
RS-232 straight ribbon cable with a DC-9 male connector on one end for
connecting a terminal, modem or SNMP workstation.
¥ Multi-drop cable with DC-9 connectors for connecting DSU/CSUs in a
daisy chain. DC-9 to DB-25 adaptor and a null-modem adaptor.
¥ Data port interface cable
The DTE or DCE type cable has a DB-25 male connector on one end and a V.35 or
RS-449 connector on the other end.
¥ Network port interface cable
Network cable can have DA-15 male connectors on both ends or a DA-15 male
connector on one end and an RJ-48C connector on the other end.
WARNING: Hazardous voltages in the form of simplex power may exist at the
telephone company's interface. These voltages are hazardous and can cause death or
severe injury!