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ISDN Connection Management
Address Connect
An Address Connect connection is an ISDN connection that is established to a specific destination P840
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 P840 will receive the frame and examine
the destination network address contained within the frame.
If the P840 can determine the route to the destination network address, the frame is passed along to one of the
currently connected partner P840 Routers. If the destination network is not located on a currently connected
partner P840, the local P840 will then look in the Address Connect table to determine which partner P840 to
call.
The Address Connect tables are used by the P840 to determine which remote P840 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 P840 operator.
Netw ork B
555-2000
Netw ork A
555-1000
IS D N N e tw o rk
Netw orks C through G
Th e IS D N conn ection is m ade
to the a ppropria te rem ote netw ork
according to the entries in the
A ddress C onnect table.
555-8000
Rem ote N etw ork ISD N N um ber
Netw ork B
555-2000
Netw ork C
555-3000
Netw ork D
555-4000
Netw ork E
555-5000
Netw ork F
555-6000
Netw ork G
555-7000
Netw ork H
555-8000
Netw ork H
Figure 2 - 2 Address Connect WAN Topology
Manual Call
A manual call is simply an operator initiated ISDN call to a remote partner P840. The ISDN number is entered
by the operator and a call is made.
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