the multiplex sublayer shall forward the traffic channel frame to the physical layer for transmission iii if there are no high priority signaling data to send and either the service option using primary traffic or the service option using secondary traffic but not both have data to send the multiplex sublayer shall perform the following d if there are low priority signaling data to send and the primary or secondary traffic data size does not exceed the traffic part of a dim and burst traffic channel frame the multiplex sublayer shall select the low priority signaling data with highest priority among the low priority signaling data available for transmission the multiplex sublayer shall select the lowest traffic channel frame rate allowed under the connected service configuration that can carry both the signaling and traffic data the multiplex sublayer shall form a dim and burst traffic channel frame containing traffic and signaling data and shall forward the traffic channel frame to the physical layer for transmission e otherwise the multiplex sublayer shall select the lowest traffic channel frame rate allowed under the connected service configuration that can carry the traffic data the multiplex sublayer shall form a traffic channel frame containing only traffic data and shall forward the traffic channel frame to the physical layer for transmission iv if there are no high priority signaling data to send and the service options using primary and secondary traffic have no data to send the multiplex sublayer shall perform the following a if low priority signaling data are available for transmission the multiplex sublayer shall select the low priority signaling data with highest priority among the low priority signaling data.