FIELD: communication. SUBSTANCE: protective holder has fixing stud located on lower surface of holder designed to react against external vibration, recess meant to house mechanical connector, groove intended to carry tube fabricated from heat shrinkable material and guide placed on external edges of holder that has recess to hold optical cable. Guide can be manufactured from elastic sponge and have number of recesses equal to number of laid optical fibers. EFFECT: increased resistance to vibrations. 1 cl, 4 dwg
