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ATM Operation
Setting Foreground Traffic
Setting Foreground Traffic
Description
There are one foreground and seven background ATM channels available for
testing. The backgrounds are used to simulate real traffic which can be routed
differently to the foreground channel. The foreground is the test channel you use to
stress the system under test.
Refer to page 161 for a description of how to set up background traffic. The relative
distribution of background and foreground is described on page 162.
How To
Foreground Setup
1 Set up the Transmitter for ATM in the MAIN SETTINGS folder (See "Setting up
the Transmitter for ATM Payloads " page 154").
2 Select
the SETUP field to
the cursor keys.
3 Select an ATM Payload from the choices offered.
To make a range of error measurements on your connection, select
measurement of cell errors, cell loss, cell misinsertion and cell delay
simultaneously. For a simple BER measurement you can select
byte. When making a jitter tolerance measurement, select
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TRANSMIT
and the
FOREGROUND
as the payload in the transmitter and the receiver. This allows the
TEST CELL
folder as shown above, and set
ATM SETTINGS
. Set the ATM header as required using
or
PRBS
USER
.
PRBS
159
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