Displaying And Maintaining Am Interfaces; Configuring An Isdn Bri Interface - HP MSR Router Series Configuration Manual

Step
12. (Optional.) Restore the default
settings for the AM interface.
13. Bring up the AM interface.

Displaying and maintaining AM interfaces

Execute the display command in any view and the reset command in user view.
Task
Display AM interface information.
Clear statistics for AM interfaces.

Configuring an ISDN BRI interface

Integrated services digital network (ISDN) provides all-digital terminal-to-terminal services and fulfills the
fully digitized delivery of services integrating voice, data, graphics, and video.
ISDN implements digital transmission on a user loop and provides end-to-end digitization. As a
standardized digital interface, ISDN BRI interface can forward digital and analog information.
The most commonly used ISDN standards include ITU-T I.430, Q.921, and Q.931 recommendations. All
devices that meet ITU-T ISDN standards can access an ISDN network.
ITU-T I.41 1 standardizes the ISDN user-network interface and provides a reference configuration for ISDN
access. As shown in
• Function groups—Sets of functions required for accessing an ISDN network.
Network terminal 1 (NT1)—Implements the functionality of the first layer in the OSI reference
model, such as subscriber-line transmission, loop test, and D-channel competition.
Network terminal 2 (NT2)—Implements the functionality of layers 1 through 3. NT2 is also
known as the intelligent network terminal.
Category-1 terminal equipment (TE1)—User equipment compliant with the ISDN interface
provisions. TE1 is also known as the ISDN standard terminal. Digital phone-set is an example
of TE1.
Category-2 terminal equipment (TE2)—User equipment incompliant with the ISDN interface
provisions. TE2 is also known as non-ISDN standard terminal equipment.
Terminal adapter (TA)—Provides adaptation for TE2 to access a standard ISDN interface.
Reference points—Points used to differentiate function groups.
•
R—Reference point between a non-ISDN equipment and TA.
S—Reference point between a user terminal and NT2.
T—Reference point between NT1 and NT2.
U—Reference point between NT1 and line terminal.
Command
default
undo shutdown
Figure 2, the reference configuration contains the following elements:
Command
display interface [ analogmodem
[ interface-number ] ] [ brief [ description | down ] ]
reset counters interface [ analogmodem
[ interface-number ] ]
19
Remarks
N/A
By default, an AM interface is up.