This Standard covers fiber optic communications cables intended for use in the buildings of communications users. Materials@ constructions and performance requirements are included in the Standard@ together with applicable test procedures. Refer to ICEA S-104-696 for optical fiber communications cables intended for indoor-outdoor use@ and to ICEA S-87-640 for optical fiber communication cables intended for outdoor use. Products covered by this standard are intended only for operation under conditions normally found in communication systems. Typically@ these products are installed both in exposed areas (surface mounted to walls or building baseboards or in non-stationary configurations) and in concealed areas (within walls@ attics@ etc.)@ with or without external protection (such as conduit)@ depending upon product type and specific use. These products normally convey communications signals (voice@ video@ data@ etc.) from place to place within a building.Products covered by this Standard may be factory terminated with connectors or splicing modules. When a composite cable (a cable with both optical fibers and metallic conductors) is required@ the applicable metallic conductor requirements shall be as established by agreement between the end user and the cable manufacturer. The requirements of ICEA S-90-661 should be considered when determining appropriate requirements. In some cases@ an indoor-outdoor weatherized cable may be derived from an indoor cable design (backbone or interconnect). These cables are covered in more detail in ICEA S-104-696@ to be released in 2009. MDU cabling is an emerging system topology for FTTX applications. Cables covered in this standard may be applicable for significant parts of the MDU topology. Please note ICEA Project 730 and any standards that emerge from that work for further information.