The low frequency (10-2 to 1 Hz) dynamic mechanical properties were obtained over the temperature range of 55 to 150$^{circ}C$ for trans-polyoctenamer networks prepared in the presences of 1, 1.5, and 2 parts dicumylperoxide. And also dynamic mechanical properties were obtained over the temperature range of -100 to 40$^{circ}C$ for DCP crosslinked TOR. Incorporation of dicumylperoxide (DCP) with Trans-polyoctenamer(TOR) decreases the storage modulus and increases the mechanical loss(tan$delta$). Glass transition temperature (Tg) is increased about 7$^{circ}C$ for tenfold increase in frequency (11Hz-11OHz). The shift of Tg to higher temperature with increasing frequency has been occured in accordance with the time-temperature superposition. In dynamic mechanical properties of low frequency range, storage modulus is less sensitive for variation of frequency at higher crosslinking density. Activation energy and constant C1, C2 of W.L.F. eg. are increased by the increment of D.C.P. content in crosslinked TOR. But the values of C1, C2 are too large unusually. Thus, it is concluded that Arrehenius eq. is rather fitted than W.L.F. eq. for crosslinked TOR.