
Configuring WAN Line Services
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Setting the Remote HDLC Address
Specify the 1-byte HDLC address of the remote MCE1 interface as follows:
•DCE
• DTE
• An explicit address value: 2, 4, 5, 6, or 7
Use unique HDLC addresses for the local and remote interfaces at either end of
the point-to-point circuit. For example, if the local address is DTE, configure the
remote address as DCE.
If you configure X.25 on this line, set this parameter to either DCE or DTE.
See the Remote HDLC Address parameter on page A-38
for information.
Setting Rate Adaption
Rate adaption determines the number of data bits transmitted and their bit
positions within the timeslot to achieve the data rate. The term rate adaption
means that by setting this parameter, you are adapting to the rate of your
subscriber; the software does not change the rate dynamically.
The logical line rate adaption is 64 Kb/s by default. You can select one of the
following:
• 64K -- Sets the data rate to 64 Kb/s, using all 8 bits in the timeslot.
• 56K MSB -- Sets the data rate to 56 Kb/s, using 7 of the 8 bits in the timeslot,
excluding the most significant bit (MSB). The MSB carries framing overhead.
• 56K LSB -- Sets the data rate to 56 Kb/s, using 7 of the 8 bits in the timeslot,
excluding the least significant bit (LSB). The LSB carries framing overhead.
• 9.6K -- Sets the data rate to 9.6 Kb/s, using DS0A frame format.
• 19.2K -- Sets the data rate to 19.2 Kb/s, using DS0A frame format.
The 64K, 56K MSB, and 56K LSB options specify full DS0 rates.
The 9.6K and 19.2K options specify DS0A subrates for an SDLC connection, and
are available only for an installed QMCT1 w/ DS0A link module. If you choose
one of these options, you can assign only one logical line to a timeslot. See
“Configuring a DS0A Connection” earlier in this chapter.
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