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About Service Parameters
The following parameters can only be accessed via the following passcode
552621 and can be used to modify Echo Processing Algorithms in particularly
arduous applications.
Further parameters allow changes to parameters specific to communications and
other hardware functions.
Care and caution should be exercised when changing any of these parameters
and any such changes should only be undertaken by, or under the guidance, of
an experienced Service Engineer.
Direct Access.
In order to access parameters directly use the following procedure.
Some parameters are not part of the menu system and can only be accessed
directly. To do this use the cancel key until there are no digits in the main
display then key in the parameter number and press enter.