Table of Contents
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ATM Operation
Setting up the Convergence Sublayer
Cell Header at UNI
Bits
8
7
6
GFC
VPI
VCI
Cell Header at NNI
Bits
8
7
6
VPI
VCI
GFC - Generic Flow Control
VPI - Virtual Path Identifier
VCI - Virtual Channel Identifier
PTI - Payload Type
CLP - Cell Loss Priority
HEC - Header Error Control
158
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5
4
3
2
VPI
VCI
VCI
PTI
HEC
5
4
3
2
VPI
VCI
VCI
PTI
HEC
1
Bytes
1
2
3
CLP
4
5
1
Bytes
1
2
3
CLP
4
5
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