R0106-HP MSR Router Series Layer 2 - WAN Command Reference(V7)

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Syntax
isdn two-tei
undo isdn two-tei
Default
All B-channels on a BRI interface use the same TEI.
Views
ISDN BRI interface view
Predefined user roles
network-admin
Usage guidelines
Terminal endpoint identifiers (TEIs) are assigned by the service provider to identify terminal devices. A TEI
identifies one terminal device on a point-to-point link and identifies more than one terminal device on a
point-to-multipoint link.
Typically, service provider switches assign one TEI for both B-channels on a BRI interface. If the service
provider switch requires the B-channels to use different TEIs, you must configure the BRI interface to
request a TEI from the switch before the interface can establish a call on a B-channel. If per-channel TEI
assignment is not configured, only one B-channel can be brought up. For example, 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 restore the default.
Syntax
permanent-active
undo permanent-active
Default
A BRI interface deactivates the physical layer when the Q.921 data link is disconnected.