Specifies the payload carried by the SONET/SDH Path. The payload specification corresponds to C2 (Signal Label) overhead byte in SONET/SDH Path Overhead: unequipped(1) : Path is not provisioned to carry any payload. unspecified(2) : Path is carrying an unspecifed payload. ds3(3) : Path is carrying a DS3 path as payload. vt15vc11(4) : Path is carrying SONET-VT1.5/SDH-VC11 payload. vt2vc12(5) : Path is carrying SONET-VT2/SDH-VC12 as payload. atmCell(6) : Path is carrying ATM Cells as payload. hdlcFr(7) : Path is carrying Frame Relay (HDLC) payload. e3(8) : Path is carrying an E3 path as payload. vtStructured(9) : Path is carrying VTGs/TUG3s/TUG2s which may each carry a different payload. A write operation on this object will result in update to C2 overhead byte in the Path Overhead.