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ATM Operation
Setting up the Convergence Sublayer
Setting up the Convergence Sublayer
Description
Setting up the Convergence Sublayer allows the test signal to be set to suit the ATM
network under test.
How to
1
up the Transmitter for ATM Payloads " page 154").
2
3
4
selected as
most applications ATM scrambling should be left on.
If a DS3 interface and CBIT framing is selected an additional field
CONVERGENCE SUBLAYER can be set to
Network Interface
The cell header format used at the User Network Interface (UNI) and Network Node
Interface (NNI) differs. The UNI has a Generic Flow Control field which can be
used for Media Access Control (MAC) functions to transmit cells over shared media
systems, while the NNI uses these four extra bits for extra path addressing.
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Set up the Transmitter for ATM in the MAIN SETTINGS folder (See "Setting
Select the
ATM SETTINGS
Select SETUP as required.
If
is selected then the NETWORK INTERFACE can be
CONV SUBLAYER
or
and the SCRAMBLING can be turned on or off. For
UNI
NNI
folder.
or
DIRECT
.
PLCP
157
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