I P - D S U U s e r ’ s M a n u a l
02/02/08
6
1 I N T R O D U C T I O N
The
Internet Protocol-Data Service Unit (IP-DSU)
allows for an incremental transition
from your existing network to the more flexible world of seamless interoperability that is
inherent in routed IP networking technology.
The
IP-DSU
allows IP networks to carry both their original traffic and BNS-2000/BNS-
2000 VCS (or similar legacy device) trunk traffic simultaneously. It replaces an existing,
conventional DSU on each end of a private-line circuit and eliminates the interconnecting
dedicated facility, since the BNS traffic can now be carried over an IP network. This
represents enormous savings for each trunk facility eliminated. Existing cabling between
the BNS-2000/BNS-2000 VCS entity and the conventional DSU can usually be reused.
Typical use of the
IP-DSU
is illustrated in the following diagram.
The
IP-DSU
supports a wide range of interface trunk types, allowing for flexible
installation and the ability to re-deploy
IP-DSU
units as the network evolves.
Any
Brand
Router
World Wide
IP
Network
Legacy
Device
Any
Brand
Router
Any
Media
Any
Media
IP- DSU
Device
Specific
Interface
Legacy
Device
Device
Specific
Interface
V.35
V.35
IP- DSU
10BaseT
Local
LAN
Network
10BaseT
Local
LAN
Network