Enable/Disable E164 auto conversion only on this
interface.
The E164 auto-conversion allows for algorithmic
translation between the native E164 number and E164
AESA address formats.
This object is used when there is no native E.164
number specified for this interface (see
ciscoAtmIfE164Address), to specify that only native
E.164 numbers are transmitted/received as the
called/calling party numbers and to enable/disable
E164 auto-conversion.
For the switch, E164 auto-conversion cannot
exist on the cpu port.