R0106-HP MSR Router Series Layer 2 - WAN Configuration Guide(V7)

103
Ste
p
Command Remarks
3. Specify a calling number.
isdn calling calling-number
By default, ISDN interfaces
do not send a calling number
in outgoing SETUP messages.
The device will not send the
specified calling number if the
connected service provider
switch does not transmit
calling number information.
Configuring the Q.921 operating parameters
Except for the sliding window configuration, all the Q.921 operating parameter configuration tasks are
available only on BRI interfaces.
To ensure successful call setup, make sure the call control parameters match the service provider's
settings.
Configuring the data link type of a BRI interface
The data link type of a BRI interface can be one of the following:
• point-to-point—The BRI interface can be connected only to one terminal device.
• point-to-multipoint—The BRI interface can be connected to multiple terminal devices.
Set the data link type of a BRI interface to be the same as its connected service provider switch.
If the isdn two-tei command is configured, the data link of the BRI interface must be point-to-multipoint.
You cannot change an ISDN BRI interface's data link type when a call is present.
To configure a BRI interface's data link type:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter ISDN BRI interface view.
interface bri interface-number N/A
3. Set the data link type.
• Set the data link type to
point-to-point:
isdn link-mode p2p
• Set the data link type to
point-to-multipoint:
undo isdn link-mode
The default data link type is
point-to-multipoint.
Configuring per-channel TEI assignment on a BRI interface
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