An assembly for providing a seal at an aft end of a combustor liner for a gas turbine engine including a longitudinal centerline axis extending therethrough. A constricted convection channel is used to force cooling air against a posterior surface of the electronic display. Header compression involves compressing the voice packet header into a reduced number of bites. The contact-sensitive surface may be contacted with an implement having first and second ends configured to produce respective first and second contact point configurations when placed against the contact-sensitive surface. Additionally, a configurable parameter is defined which reflects the level of traffic in an NIU, to allow pro rated allocation of time slots.