Application Overview
93
Structured versus Unstructured Summary
Use Table 25 to select whether to use structured or unstructured DS1 CBR.
Figure 57 depicts the effects of structured versus unstructured service on the
DS1/E1 framing.
Figure 57
Structured Versus Unstructured Effects on Transit DS1
Ethernet and Voice
Application
A typical configuration involves multiple PathBuilder S600s connected through an
ATM network that could consist an ATM switch or an ATM network consisting of
multiple switches. This configuration is shown in Figure 58.
Table 25
Selecting Structured Mode Versus Unstructured Mode
Structured
Unstructured
DSO midspan drop and
insert
X
DSO access grooming
X
DS1 network
management end to end
X
X
DS1 end to end
(no DSO access)
X
X
DS1 CBR 1.544 Mbps of
bandwidth
X
X
Dynamic Bandwidth
Allocation (DBA)
X
DS1
ESF
FDL
AAL 1
DS0
DS0
DS0
DS0
A&B
DS1 Structured N x 64 Kbps
Bit
Bucket
PathBuilder S600
Interface
DS1
ESF
FDL
AAL 1
DS1
DS1 Unstructured
PathBuilder S600
Interface
DTE
Timing
DS1 = 1,544 Mbps
DS0 = 64 Kbps
DS - Digital Signal
ESF - Extended Superframe
Summary of Contents for 3C63100-AC-C - PathBuilder S600...
Page 8: ...INDEX 3COM CORPORATION LIMITED WARRANTY ...
Page 14: ...xiv CHAPTER SUPPLEMENTARY REGULATORY INFORMATION ...
Page 18: ...18 ABOUT THIS GUIDE ...
Page 28: ...28 CHAPTER 1 SYSTEM DESCRIPTION ...
Page 74: ...74 CHAPTER 3 GETTING STARTED ...
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