This attribute indicates the mode of interoperability between the
Frame Relay and ATM connections regarding upper layer protocol
encapsulations.
A value of translationMode indicates that the interworking function
performs translation between RFC 1490 and RFC 1483
encapsulated headers, including routed protocol translation, bridged
protocol translation, and connection oriented protocol translation
(except for RFC 1490 connection oriented protocol without RFC
1490 header, which is done in speTranslationMode).
A value of transparentMode indicates that the interworking
function forwards data without altering the upper layer user
protocol encapsulation. Transparent mode is selected when the
upper layer user protocol encapsulation methods are compatible
between terminal equipments.
A value of speTranslationMode indicates that the interworking
function performs single protocol translation between RFC 1490
with no header and RFC 1483 encapsulated packets.