Operation Manual

Testing and Troubleshooting 231
router to call itself. For this test, an outgoing call can be initiated over
one interface of an ISDN-Controller to another interface of the same
ISDN-Controller.
In the following, configuration of a loopback test on an AVM ISDN-
Controller B1 is described. The outgoing call is initiated over interface
1 of the Controller and is received on interface 2. The interfaces are
called AVM-B1-1_1 (interface 1) and AVM-B1-1_2 (interface 2):
1. Configure an ISDN Call Destination.
Parameter path: Select WAN Call Directory > Press <Ins> >
Specify LOOP as a name for the call destination > Select a Wide
Area Medium.
Detailed information on configuring ISDN Call Destinations is
given in Chapter 7.
1a. As a Wide Area Medium , select ISDN-BRI .
1b. For Interface Name , select the first interface of your
ISDN-Controller.
In this example, it is AVM-B1-1_1.
1c. In the ISDN Number field, specify the number of the
ISDN access, the ISDN-Controller is connected to.
1d. Enter 2 in the Subaddress field.
1e. Enter LOOP for Local System ID and Remote System ID .
1f. Leave the default values in the other fields.
2. Configure TCP/IP.
Parameter path: Select Protocols > Select TCP/IP.
2a. Leave the default values in the TCP/IP Protocol Configu-
ration .
3. Bind TCP/IP to the two ISDN interfaces.
Parameter path: Select Bindings > Press <Ins> > Select TCP/IP >
Select a configured ISDN interface.
3a. For each of the two interfaces, select Unnumbered
Point-to-Point as the WAN Network Mode .
Procedure