Abstract: Three data formats for telecommunication networks are provided. One format is an asynchronous packet bus overlay datagram format (122) constructed to include an internal datagram header (140) and a datagram payload (141) concatenated with the internal datagram header. The internal datagram header comprises a destination address (146), a weighted age (152), and a source address (14). A second format is a wideband bus overlay format (126) comprising three header octets and a plurality of payload octets such that the data is formatted into one of a plurality of industry standard isochronous wideband data formats. A third format is a narrow band bus overlay format (124) comprising a plurality of signaling octets, a plurality of octets concatenated with the first plurality of signaling octets to hold data, and a common system multiframe structure.