Isdn Bri-Slipwnd-Size - H3C MSR Series Command Reference Manual

Parameters
ascending: Selects ISDN B channels in ascending order.
descending: Selects ISDN B channels in descending order.
Usage guidelines
The executing of this command does not take effect when the PBX manages ISDN B channels, or without
configuring the isdn bch-local-manage command on the user side.
Examples
# Set the B channel selection method on BRI 2/0 to descending order.
<Sysname> system-view
[Sysname] interface bri 2/0
[Sysname-Bri2/0] isdn bch-select-way descending
Related commands
isdn bch-local-manage

isdn bri-slipwnd-size

Use isdn bri-slipwnd-size to set the sliding window size on an ISDN BRI.
Use undo isdn bri-slipwnd-size to restore the default.
Syntax
isdn bri-slipwnd-size window-size
undo isdn bri-slipwnd-size
Default
The sliding window size on an ISDN BRI is 1.
Views
ISDN interface view
Predefined user roles
network-admin
Parameters
window-size: Specifies the sliding window size in the range of 1 to 7.
Usage guidelines
Frames in the Q.921 buffer are sent in sequence. A frame can be sent only when the previous frame is
acknowledged. To improve transmission efficiency, the sliding window mechanism is introduced. It
allows the system to send multiple continuous frames without having to wait for the acknowledgement to
the previous frame.
The sliding window size determines the maximum number of unacknowledged frames. When sending a
frame, the system checks the number of unacknowledged frames. Suppose V(A) is the sequence number
of the previous acknowledged frame, V(S) is the sequence number of the frame to be sent, and K is the
sliding window size. If V(A) + K = V(S), the system stops sending frames.
Examples
# Set the sliding window size on interface BRI 1/0 to 7.
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