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

146
Switch type BRI CT1/PRI CE1/PRI
QSIG No Yes Yes
NTT Yes Yes No
NOTE:
The device provides full support for DSS1. For any other variants of ISDN, the device only provides the
basic call functionality.
Examples
# Set the ISDN switch type to ETSI on BRI 2/4/0.
<Sysname> system-view
[Sysname] interface bri 2/4/0
[Sysname-Bri2/4/0] isdn protocol-type etsi
# Set the ISDN switch type to 5ESS on the ISDN PRI interface Serial 2/3/0:23.
<Sysname> system-view
[Sysname] interface serial 2/3/0:23
[Sysname-Serial2/3/0:23] isdn protocol-type 5ess
Related commands
isdn protocol-mode
isdn q921-permanent
Use isdn q921-permanent to enable permanent Q.921 link connectivity on a BRI interface.
Use undo isdn q921-permanent to restore the default.
Syntax
isdn q921-permanent
undo isdn q921-permanent
Default
Permanent Q.921 link connectivity is disabled on ISDN BRI interfaces.
Views
ISDN BRI interface view
Predefined user roles
network-admin
Usage guidelines
You can enable permanent Q.921 link connectivity only on user-side ISDN BRI interfaces.
When this function is enabled, the ISDN BRI interface establishes and maintains permanent data link
connections automatically, regardless of whether or not a call is present. If the isdn two-tei command is
also configured, the ISDN BRI interface establishes and maintains two permanent data link connections.
When this function is disabled, the ISDN BRI interface transits to the multiframe established state only
when a call is present. In multiframe established state, the interface disconnects the Q.921 link if no
Q.931 call is present when the T325 timer expires.