Permanent-Active - H3C MSR810 Command Reference Manual

you must configure per-channel TEI assignment when a BRI interface is connected to an ISDN NI
compliant DMS-100 switch in North America.
You cannot configure per-channel TEI assignment in the following situations:
• The BRI interface's data link type is point-to-point.
• A call is present on the interface.
Examples
# Enable per-channel TEI assignment on BRI 2/4/0.
<Sysname> system-view
[Sysname] interface bri 2/4/0
[Router-Bri2/4/0] isdn two-tei
Related commands
isdn link-mode p2p

permanent-active

Use permanent-active to enable persistent Layer 1 activation on a BRI interface.
Use undo permanent-active to disable persistent Layer 1 activation on a BRI interface.
Syntax
permanent-active
undo permanent-active
Default
Persistent Layer 1 activation is disabled on a BRI interface.
Views
ISDN BRI interface view
Predefined user roles
network-admin
Usage guidelines
Persistent Layer 1 activation is available only on network-side BRI interfaces.
For energy efficiency, a network-side ISDN interface typically deactivates the physical layer when the
data link layer connection is disconnected. To maintain physical layer connectivity when the data link
connection is lost, enable persistent Layer 1 activation. This feature prevents Q.921 from sending
deactivation requests to the physical layer.
Persistent Layer 1 a ctivation can only maintain the active state of the physical layer. It does not
activate the physical layer if you enable it when the physical layer is inactive. In contrast, Q.921
attempts to set up data link connections if you enable permanent Q.921 link connectivity when no
data link connections are present.
NOTE:
Only BRI interfaces on the BSV module can operate on the network side.
Examples
# Enable persistent Layer 1 activation on BRI 2/4/0, a network-side BRI interface.
<Sysname> system-view
[Sysname] interface bri 2/4/0
192