To provide a torsional shock absorbing apparatus which can obtain a non-linear torsional characteristic having a large torsion angle of a driving rotation member and a driven rotation member, and can prevent an extremely large torque from being transmitted to the driven rotation member. A message relating to a service feature is constructed and wrapped in a wrapper, which is then transmitted to the network node via an out-of-band control channel for invoking the requested service feature. This is done by determining the distribution of data. For example, at a baseball game, the stadium may send an audio signal that with game stats, commentary and the like.