Date of Last Update : 16 May 1995 List of ITU-T L-Series Recommendations in force ** - Series L * Construction, installation and protection of cables and other elements of outside plant L.1 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Construction, installation and protection of telecommunication cables in public networks L.2 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Impregnation of wooden poles L.3 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Armouring of cables L.4 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Aluminium cable sheaths L.5 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Cable sheaths made of metals other than lead or aluminium L.6 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Methods of keeping cables under gas pressure L.7 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Application of joint cathodic protection L.8 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Corrosion caused by alternating current L.9 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Methods of terminating metallic cable conductors L.10 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Optical fibre cables for duct, tunnel, aerial and buried application L.11 (1988) [Blue Book Fasc. IX] [Publ.: Mar.90] Joint use of tunnels by pipelines and telecommunication cables, and the standardization of underground duct plans L.12 (07/92) [New] [7 pp.] [Publ.: Oct.92] Optical fibre joints L.13 (07/92) [New] [4 pp.] [Publ.: Oct.92] Sheath joints and organizers of optical fibre cables in the outside plant L.14 (07/92) [New] [5 pp.] [Publ.: Oct.92] Measurement method to determine the tensile performance of optical fibre cables under load L.15 (1993) [New] [8 pp.] [Publ.: Oct.94] Optical local distribution networks - Factors to be considered for their construction L.16 (1993) [New] [2 pp.] [Publ.: Mar.94] Conductive plastic material (CPM) as protective covering for metal cable sheaths ---------------------------------------------------------------------- Some 1120 Recommendations from the Blue Book are still in force. They are included in fascicles and volumes of the Blue Book that may still be purchased from the ITU Sales Service. 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