Isdn Progress-To-Alerting Enable - H3C MSR Series Command Reference Manual

Default
The sliding window size of a PRI is 7.
Views
ISDN interface view
Predefined user roles
network-admin
Parameters
window-size: Specifies the sliding window size in the range of 5 to 64.
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 of interface CE1/PRI 1/0 to 10.
<Sysname> system-view
[Sysname] controller e1 1/0
[Sysname-E1 1/0] using ce1
[Sysname-E1 1/0] pri-set
[Sysname-E1 1/0] quit
[Sysname] interface serial 1/0:15
[Sysname-Serial1/0:15] isdn pri-slipwnd-size 10
Related commands
isdn bri-slipwnd-size

isdn progress-to-alerting enable

Use isdn progress-to-alerting enable to configure an ISDN interface to convert a received progress
message into an alerting message.
Use undo isdn progress-to-alerting enable to restore the default.
Syntax
isdn progress-to-alerting enable
undo isdn progress-to-alerting enable
Default
The progress-to-alerting conversion function is disabled.
Views
ISDN interface view
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