Black Box Series 5000 Reference Manual page 24

ISDN Connection Management
Address Connect
An Address Connect connection is an ISDN connection that is established to a specific destination router
dependent upon the destination network address contained within traffic received from the local LAN.
When a device on the local LAN wishes to establish a session with a device on a remote LAN, the local device
will send a frame with a destination address of the remote device. The router will receive the frame and examine
the destination network address contained within the frame.
If the router can determine the route to the destination network address, the frame is passed along to one of the
currently connected partner router. If the destination network is not located on a currently connected partner
router, the local router will then look in the Address Connect table to determine which partner router to call.
The Address Connect tables are used by the router to determine which remote router is called when a specific
destination network address is requested from a device on the local LAN. The Address Connect tables are
configured by the router operator.
Network A
Manual Call
A manual call is simply an operator initiated ISDN call to a remote partner router. The ISDN number is
entered by the operator and a call is made.
The ISDN connection is made
to the appropriate remote network
according to the entries in the
Address Connect table.
Remote Network ISDN Number
Network B 555-2000
Network C 555-3000
Network D 555-4000
Network E 555-5000
Network F 555-6000
Network G 555-7000
Network H 555-8000
Figure 2 - 2 Address Connect WAN Topology
555-2000
ISDN Network
555-1000
555-8000
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Network B
Networks C through G
Network H