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NetCrossing Gateway NX-2E1/T1 Operator’s Manual
4-7
or
cas-MF
) the gateway aligns its data collection to the TDM multiframes and collects only the
time slots specified with the
slots
parameter. Time slot zero is not included in the WAN
packets. At the opposite end the receiving gateway generates the Time Slot 0 synchronization
pattern and fills the slots selected with the data received from the remote gateway. In
cas-MF
time slot 16 is always sent (you can not turn it off with the
slots
parameter). In addition, the
receiving gateway inserts the MutliFrame align pattern (0000) in the upper four bits of TS16 of
frame 0. This keeps the user equipment frame synchronized even in the presence of packet
losses. In
crc4-MF
mode TS16 is treated like any other time slot.
coding=ami
or
hdb3
Selects the TDM line coding. Set it to the same format of the E1 equipment connected to the
Gateway. Typically this would be HDB3.
receive-sensitivity=long-haul,short-haul
Selects the TDM port receiver sensitivity for the two applications.
idle-code=0..255
Specifies the byte to use in each time slot when no other value is available. This could be due
to running the link in fractional mode or due to an underrun error.
slots=n1-n2,n3-n4….
or
n1,n2,n3
or
all
The E1 frame consists of 32 time slots numbered 0 through 31. With this parameter you may
specify any subset of the 32 slots which may consist of disjoint sets. The gateway extracts the
specified slots from the received E1 signal and only sends those slots to the remote gateway
across the WAN. On the outgoing E1 line, the gateway uses the data from the remote gateway
to fill the selected time slots. All other time slots are filled with the byte value specified with
the
idle-code
parameter.
The active time slots may be specified as multiple ranges (n1-n2), or as individual numbers
(n1,n2,n3) or a combination. All time slot numbers must be in the range of 1 through 31. Do
not use any “spaces” between ranges or slot numbers.
local-area-network
speed=10hdx
or
10fdx
Sets the LAN ethernet port speed to 10Mbps half-duplex (10hdx), or 10 Mbps full-duplex
(10fdx).
node
name=”ASCII string”
Gives the node a meaningful name for further reference. This name will be used as the
command prompt. It is also used to identify the node in a variety of commands and displays.
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