In TCP over OBS communications, the existing architecture namely “Destination based Burst Aggregation” cannot guarantee the delivery of Real Time traffic as the packets belonging to different priorities are assembled into a single Data Burst. In this paper, a new architecture is proposed at the ingress of the OBS network called “Packet Priority Classifier and Burst Transcription based Burst Aggregation”, in which packets with Real Time Constraints are aggregated into a Data Burst labeled as Delay Sensitive Bursts (DSBs) and the others assembled into Best Effort Bursts (BEBs).