LAN - WAN Standards White Papers
CSU/DSU Non-Integrated vs. Router-Integrated
Overview
High-speed, LAN-attached applications continue to rise,
generating an increasing need for cost-effective WAN
access for intranet and internet access implementation.
Routed networking is today the most widely implemented
network solution for organizations of all types. Digital
circuits operating at speeds from 56Kbps (DDS
service) to 1.544Mbps (T1 and Fractional T1 services)
to T3 (45 Mbps or 28 T1’s) provide the WAN infrastructure
that interconnects the routers located at each
location served by the network.
The traditional approach to terminating DDS, T1/FT1
and T3 circuits at each location is to use a standalone or
high density rack mounted Channel Service Unit/Data
Service Unit (CSU/DSU). “Line-by-line” CSU/DSUs
and CSU/DSUs providing integrated T1 access are
mature products, and are available with enhancements
such as SNMP management, direct Ethernet connections,
and dial restoral features.
In addition to traditional standalone CSU/DSU solutions,
routers with an integral CSU/DSU are available.
Integrated CSU/DSU functionality initially might
appear to be a good choice, i.e., having one integrated
unit instead of two functional units may provide certain
reliability advantages.
| Publisher | General DataComm | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | August 2003 | Downloads | 36 |
| Format | White Papers | ||
| Topics | |||
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