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User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform
Chapter 1
DDR Configuration
1-2
1.3 Preparing DDR Configuration
For a network needing DDR, subscribers can make configuration preparations
following the flow below.
z
Specify which routers in the network need DDR, which interfaces of these routers
use DDR, what transmission medium is used, what topology is adopted, whether
these interfaces are sending calls, receiving calls, or sending and receiving calls at
the same time.
z Specify the type of interface to be used (asynchronous serial port or ISDN BRI/PRI
interface).
z Specify the interface encapsulation to be used (PPP etc.).
z
Specify the network protocol to be used (IP or IPX etc.).
z Specify the dynamic routing protocol (RIP etc.) to be used at DDR interface.
z
Select either Legacy DDR or Dialer Profile to configure DDR.
z Configure DDR.
The flow chart of configuration preparations is shown in the following figure.
Used by which routers
in the network
Which routers send
calls and which
receive
Which network
is used (PSTN or ISDN)
Async ISDN
Network protocol?
(IP, IPX)
Encapsulate?
(X.25,FR,SLIP
,
PPP
)
DDR
Standard DDR (legacy
DDR) or flexible DDR
(Diaber Profiles)
Configure DDR
Serial
Figure DC-1-1 DDR configuration preparation flow