The payload content defines the content of the payload and indirectly
the source fo the transmission stream within the OSAP. Payloads
carrying data(1) are process by the packet switch. Payloads carrying
tdm(2) traffic are not processed by the packet switch and are instead
connected directly to the TDM access ports.
Unequipped(3) dictates that the payloads are not sourced from either
the packet switch or the TDM access ports. Instead, the timeslot is
filled with unequipped payload.
This object is ignored if this row describes a timeslot that is broken
down further into lower bandwidth timeslots.