Table of Contents
Advertisement
Payload Scrambling Option
The OC3port Plus has a payload scrambling option that turns the automatic
scrambling of ATM cell payloads on and off. The advantage of using this option is
that it lets you further differentiate the header bytes from the payload, thereby
improving the efficiency of the cell delineation process. Payload scrambling can
provide a solution to some transmission equipment that is sensitive to certain bit
patterns in the ATM payload. The scrambler guarantees a higher ones density and
no false triggering of alarms.
In payload scrambling, ATM cells are extracted from the transmitted payload and
scrambled using an X
process is reversed and the X
payload.
Payload scrambling is activated or de-activated by changing the setting for the
option. To change this setting, follow these steps:
Payload Scrblng
1. Press the
ATM
2. Press the
or
Up
Then, press
ENTER
following:
ATM OPTIONS:
Payload Scrblng ON
Coset Polynmial ON
3. Make sure that the
has two settings: ON and OFF. When set to ON, payload scrambling is
activated. When set to OFF, payload scrambling is de-activated.
4. Press the
Left
The change takes effect immediately. The setting you selected is now the
current value of the
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Configuring for ATM Network Testing
43
+1 self-synchronizing polynomial. On the receive side, the
43
+1 polynomial is used to de-scramble the received
key. The
ATM SELECTIONS
key to move
Down Arrow
. The
submenu is displayed, as in the
ATM Options
- - - - - - - - - - - - - - - - - - - - - - -
option is on the selection line. This option
Payload Scrblng
or
key to select the desired setting.
Right Arrow
option.
Payload Scrbling
Other ATM Configuration Options
menu is displayed.
to the selection line.
ATM Options
5
za072f.eps
5-19
Advertisement
Table of Contents
