A first optical interface is coupled to a first IP service node and a first non-IP service node. In one aspect, a programmable attenuation element may be provided on-chip at the output of a driver amplifier, prior to a matching network. Multiple frequency bands can be supported with the antenna by employing more than one axially spaced apart feed structures having associated feed locations arranged along the body portion of the antenna. The anchor strap has an intermediate anchor portion disposed on the inner strap surface between opposing end anchor portions that are releasably securable to the outer sleeve surface such that tension in the anchor strap may be selectively adjusted. The sliding plate comprises: a locking part formed by bending the sliding plate; a trench formed on the sliding plate; a track mounted on each side of the trench; and a plurality of through holes formed on the sliding plate in front of the trench.