Configuring Q.931 Call Control Parameters; Configuring B-Channel Selection - HPE FlexNetwork MSR series Configuration Manual

Step
11. Configure ISDN to include
the calling-name field in
outgoing packets.
12. Configure ISDN to include
the connected-name field in
outgoing packets.
13. Configure
interface to interpret the
PROGRESS message as
the ALERTING message.
14. Set the progress description
in the progress indicator
information
ISDN signaling messages.

Configuring Q.931 call control parameters

To ensure successful call setup, make sure the call control parameters match the service provider's
settings.

Configuring B-channel selection

Efficient B-channel selection for calls improves call establishment efficiency and reduces call losses
on ISDN lines, especially PRI ISDN lines.
By default, ISDN interfaces on the device are operating as the user side, and they do not select
B-channels for calls. B-channel selection is done by the service provider switch.
To enable an ISDN interface to select B-channels, you have the following options:
•
Use the isdn bch-local-manage command to enable non-exclusive B-channel selection. The
interface selects a preferred B-channel for a call, but it will use the B-channel selected by the
peer end when a selection conflict occurs.
•
Use the isdn bch-local-manage exclusive command to enable exclusive B-channel selection.
The interface selects a preferred B-channel for a call, and it does not accept the B-channel
selected by the peer end when a selection conflict occurs.
IMPORTANT:
Configure exclusive B-channel selection only when the interface is the network side. If the interface
is the user side, exclusive B-channel selection will cause a call establishment failure when a
B-channel selection conflict occurs.
To enable B-channel selection on an ISDN interface:
Step
1. Enter system view.
2. Enter ISDN BRI or PRI
interface view.
3. Enable the interface to
Command
isdn carry calling-name
isdn carry connected-name
the ISDN
isdn
enable
isdn
element of
indicator
Command
system-view
interface
interface-number
isdn bch-local-manage
progress-to-alerting
progress-indicator
Remarks
N/A
interface-type
N/A
By default, B-channel selection is disabled.
112
Remarks
number information is absent or
incomplete in the outgoing SETUP
message.
By default, ISDN does not include
the calling-name field in outgoing
packets.
By default, ISDN does not include
the connected-name
outgoing packets.
By default, this function is disabled.
By default, ISDN uses the progress
description assigned
upper-layer voice service.
field in
by the