A R 7 2 0 R O U T E R Q U I C K S T A R T G U I D E
9
2
Check the configuration of the port, by typing the command:
SHOW SYN=
n
where
n
is the synchronous port number. Check that the
information displayed is correct. In particular, “State” should be
set to “enabled” and “Interface type” should match the
transition cable used.
3
Configure a data link layer module, such as PPP (
Point-to-Point
Protocol
), Frame Relay or X.25 LAPB, to use the synchronous
interface. To create a PPP interface 0 to use synchronous port 0,
type the command:
CREATE PPP=0 OVER=SYN0
4
Check the configuration by typing the commands:
SHOW SYN=0
SHOW PPP=0
The output of the SHOW SYN command should show “Active”
set to “yes” and “Module” set to “ppp”. The output of the
SHOW PPP command should show interface ppp0 over syn0
with “LCP” as the control protocol. The
Tx
and
Rx
LEDs will be
lit as data is sent and received on the interface.
ORDERING ISDN IN THE USA AND CANADA
In the United States and Canada, Basic Rate ISDN is provided
using National ISDN-1, 5ESS or DMS-100 formats, all of which
are supported by the AR720 router. If National ISDN-1 is
available, you can select from a list of “Capability Packages”,
each providing different features. Contact your ISDN service
provider for more information. The AR720 router will accept
either one or two Service Profile Identifiers (SPIDs).
CONNECTING TO A BASIC RATE S/T ISDN SERVICE
Warning: The factory default hardware settings described
here are correct for European Union (EU) countries. For
other countries, contact your distributor or reseller for
details of local requirements.
To connect an AR720 router with an AT-AR021(S) BRI-S/T PIC
installed to a Basic Rate S/T ISDN service, follow these steps:
1
Check that the AT-AR021(S) BRI-S/T PIC has the correct
termination for the local conditions. The AT-AR021(S) PIC can
only operate in TE mode and is shipped with the standard
100
Ω
termination jumpers removed. This is appropriate for
most situations, where the local building wiring provides the
ISDN termination. Your distributor or reseller can advise you
whether or not termination jumpers are required.
2
Connect the supplied CAT 5 cable, or an approved ISDN cable,
from the BRI interface on the rear panel of the AT-AR021(S)
PIC to the ISDN service provider’s termination point (NT1).
BRI S/T
Active
D
B1
B2
Connect the supplied CAT 5 cable or an approved ISDN cable from the BRI port on
the rear panel of the AT-AR021(S) BRI-S/T PIC to the NT1.
Note: If you wish to make your own ISDN cable, see the
AR Router
Hardware Reference
for a detailed description of how to wire an
ISDN interface cable.
3
Check the operation by observing the state of the LEDs on
the rear panel of the AT-AR021(S) PIC. In some territories (e.g.
New Zealand and the European Union) the
Active
LED will be
lit if the link to the NT1 is operational. In other territories (e.g.
Australia) the
Active
LED will only be lit when the router
attempts a call. The
D
LED will flicker as control traffic is
exchanged with the ISDN switch. The
B1
and
B2
LEDs will
flicker as data is sent and received on the B1 and B2 channels.
To test the AT-AR021 PIC you will need to configure a routing
protocol such as IP or IPX to use ISDN. See
Configuring ISDN
,
Configuring an IP Network
and
Configuring a Novell IPX Network
later in this guide for more information about configuring ISDN
calls and routing protocols.
CONNECTING TO A BASIC RATE U ISDN SERVICE
To connect an AR720 router with an AT-AR021(U) BRI-U PIC
installed to a Basic Rate U ISDN service, follow these steps:
1
Connect the supplied CAT 5 cable or an approved ISDN
cable from the BRI interface on the rear panel of the
AT-AR021(U) PIC to the ISDN service provider’s termination
point (ISDN line wall jack).
Active
BRI U
D
B1
B2
Connect the supplied CAT 5 cable, or an approved ISDN cable, from the BRI port on
the rear panel of the AT-AR021(U) BRI-U PIC to the ISDN line wall jack.
