Cabletron Systems MMAC-Plus SFCS-1000, Configuration Manual

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5-1
CHAPTER 5
DS-3 Configuration
If your Cabletron switch is equipped with one or more DS-3 network mod-
ules, some additional configuration may be necessary. There are several
parameters which can be configured in order to work with other DS-3 equip-
ment or to perform testing on the switch‘s DS-3 ports.
5.1 DS-3 Front Panel LEDs
There is an LED corresponding to both the transmit and receive lines of each
DS-3 port. These LEDs provide some information about the state of the port
depending on their color.
5.1.1 Transmit Indicators
The LED corresponding to the transmit line of the port has the following
meaning depending on its color:
off Indicates that there are currently no cells being transmitted from
the port.
green Indicates that a cell is being transmitted on the port.
5.1.2 Receive Indicators
The LED corresponding to the receive line of the port has the following mean-
ing depending on the color:
off Indicates that a carrier has been detected on the line. A carrier is
detected when there is a proper voltage signal on the line.
green Indicates that a cell is being received on the port.
red Indicates a loss of carrier.