This attribute specifies up to eight types of trunks that can be used
on the route. The terrestrial and satellite trunk types have been
defined, leaving six remaining arbitrary types that can be defined by
the network administration. The trunk's type is indicated in the
trunkType attribute of the Trunk component. When selecting a
route, PORS chooses only trunks whose trunkTypes are in the
permittedTrunkTypes for the path.
Description of bits:
terrestrial(0)
satellite(1)
trunkType1(2)
trunkType2(3)
trunkType3(4)
trunkType4(5)
trunkType5(6)
trunkType6(7)