User`s guide

Small Office Remote Access Switch 37
H ARDWARE O VERVIEW
System Platforms
CYBERSWITCH BACK PANEL
The back panel provides connectors for WAN and LAN access, as well an RS232 port for an
administration console. It also contains termination switches, a DC power input connector and a
Reset button.
The two connectors available for LAN access are the 10Base-T (RJ-45 Ethernet connector) or the
optional 10Base-2 (Ethernet BNC connector). Only one of the two ports may be activated at a time.
If you attempt to use both, the system hardware automatically defaults to the 10Base-T port.
The back panel also provides WAN access via an RJ-45 ISDN interface connector for a BRI line. This
interface supports 2B + D channels, with each of the two B channels capable of providing either
56Kbps or 64Kbps digital transmission.
To the right of the BRI connector is a pair of termination switches for multipoint connections. These
switches are labeled Term. These DIP switches control the terminating resistors for the Basic Rate
Interface.
You must set both switches in the same direction or improper operation may result. The small
arrow points in the direction of the on position. When the switches are on, the resistors for the
connector are providing termination for the BRI line. Conversely, when the switches are off, the
resistors for the connector are not providing termination for the BRI line.
On an S/T interface, it is important to have the termination switches set correctly. On a U interface,
the circuitry is intended to operate properly no matter which setting is used; however, optimum
operation is achieved with the switches off.
The Console connector (an RS232 connector) provides an asynchronous connection for
administration console management, or PPP-Async data transfer.
The power input comes from the provided external power supply, which attaches to the DC Power
connector. Voltages required are +5 volts DC and +12 volts DC.
Note that there is no POWER switch on the back panel. The system has been designed to run
continuously in order to support the Plain Old Telephone Service (POTS) interface. In the event that
the CyberSWITCH is accidently unplugged, you must press Reset once power is reconnected. In
the event you must disconnect the unit from its power supply, unplug the power cord from the wall
(the AC connection) first. Do not remove the DC power input (attached to the CyberSWITCH)
before disconnecting at the wall.
The Reset button is a small, recessed button on the right side of the back panel. To reset the unit,
use a pen or a sharp pencil to depress the button.
The RJ-11 connectors for the dual Plain Old Telephone Service (POTS) interface, are identified by
telephone icons, and are labeled 1 and 2.