Afar NX-2E1, Operator'S Manual

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NetCrossing Gateway NX-2E1/T1 Operator’s Manual
4-6
multi-cast-timeout-sec=5..10000
Sets the time the gateway will retain, in its internal table, Ethernet multi-cast addresses obtained
from the network. This can not be set to a value below the station-timeout.
Examples:
> ethernet statio=100 multicast=500
e1a-setup
e1b-setup
These two commands configure the characteristics of the respective TDM port, A or B. If the
unit is in T1 mode you must first issue the command
>tdm e1 to change the mode to E1.
clock-source=internal or external or remote or off
Selects the source for the generation of the Tx clock used to clock the TDM data out of the
gateway as follows:
internal : The Tx clock is generated inside the gateway in its frequency synthesizer circuit,
driven from an internal Crystal Oscillator.
external : The Tx clock uses the Rx clock recovered from incoming Rx data in the TDM port.
remote : The Tx clock is generated internally but locked to the Rx clock of the peer unit.
off : Disables this TDM port
In order for two gateways to establish a serial link, the clock source in the two units must be set
in a compatible fashion. This requires that one unit have its clock source set to remote, and the
other to either internal, external or remote.
loopback=disable or input or output
Selects different loopback modes of the TDM port used for test purposes as follows:
disable : default value used for normal operation.
input : The TDM data stream input into the gateway is looped back to come out in the same
port. The data stream received from the remote unit is discarded.
output : The TDM data stream output by the gateway is looped back into the receive data
stream. The TDM data stream coming from the user device is discarded. This is equivalent to
placing a loopback plug in the RJ45 connector.
framing=crc4-MF or cas-MF or unframed
Selects the E1 framing format. In unframed mode the gateways transports every bit (including
Time slot 0) without regard to frame or multiframe structure. In multiframe modes ( crc4-MF