[3] VAINSHTEIN A, STEIN Y J. Structure-agnostic time division multiplexing(TDM) over packet (SAToP): RFC4553-2006[S]. [S.l.]: Internet Engineering Task Force(IETF), 2006.
[4] VAINSHTEIN A, METZ E, SASSON I, et al. Structure-aware time division multiplexed(TDM) circuit emulation service over packet switched network(CESoPSN), RFC5086-2007[S]. [S.l.]: Internet Engineering Task Force(IETF), 2007.