89 describes the general requirements and a design guide for suspension wires, telecommunication poles and guy-lines that support aerial cables for optical access networks. This Recommendation also describes loads applied to the infrastructures. Hardware components can be reused. Recommendation ITU-T L. Aerial infrastructure. The unique design of the lightweight AFL Mechanical Suspension supports spans of optical ground wire (OPGW) cable through a wide range of line angle changes. The rods are. FO-VC2 JOINT USE - VERICAL MIDSPAN CLEARANCES 48. FO-GB GROUNDING AND BONDING 49. APPENDIX A - COVER SHEET / TOC 52.