| 
			
		| 
			
				|  | 2005-2008 ITU-T SG 6 Recommendations | 
 |  |  | L series	: Construction, installation and protection of cables and other elements of outside plant | 
 |  |  |  |  |  | L.1	: Construction, installation and protection of telecommunication cables in public networks | 
 |  |  |  |  |  | L.2	: Impregnation of wooden poles | 
 |  |  |  |  |  | L.3	: Armouring of cables | 
 |  |  |  |  |  | L.4	: Aluminium cable sheaths | 
 |  |  |  |  |  | L.5	: Cable sheaths made of metals other than lead or aluminium | 
 |  |  |  |  |  | L.6	: Methods of keeping cables under gas pressure | 
 |  |  |  |  |  | L.7	: Application of joint cathodic protection | 
 |  |  |  |  |  | L.8	: Corrosion caused by alternating current | 
 |  |  |  |  |  | L.9	: Methods of terminating metallic cable conductors | 
 |  |  |  |  |  | L.10	: Optical fibre cables for duct and tunnel application | 
 |  |  |  |  |  | L.11	: Joint use of tunnels by pipelines and telecommunication cables, and the standardization of underground duct plans | 
 |  |  |  |  |  | L.12	: Optical fibre splices | 
 |  |  |  |  |  | L.13	: Performance requirements for passive optical nodes: Sealed closures for outdoor environments | 
 |  |  |  |  |  | L.14	: Measurement method to determine the tensile performance of optical fibre cables under load | 
 |  |  |  |  |  | L.15	: Optical local distribution networks – Factors to be considered for their construction | 
 |  |  |  |  |  | L.16	: Conductive plastic material (CPM) as protective covering for metal cable sheaths | 
 |  |  |  |  |  | L.17	: Implementation of connecting customers into the public switched telephone network (PSTN) via optical fibres | 
 |  |  |  |  |  | L.18	: Sheath closures for terrestrial copper telecommunication cables | 
 |  |  |  |  |  | L.19	: Multi-pair copper network cable supporting shared multiple services such as POTS, ISDN and xDSL | 
 |  |  |  |  |  | L.20	: Creation of a fire security code for telecommunication facilities | 
 |  |  |  |  |  | L.21	: Fire detection and alarm systems, detector and sounder devices | 
 |  |  |  |  |  | L.22	: Fire protection | 
 |  |  |  |  |  | L.23	: Fire extinction – Classification and location of fire extinguishing installations and equipment on premises | 
 |  |  |  |  |  | L.24	: Classification of outside plant waste | 
 |  |  |  |  |  | L.25	: Optical fibre cable network maintenance | 
 |  |  |  |  |  | L.26	: Optical fibre cables for aerial application | 
 |  |  |  |  |  | L.27	: Method for estimating the concentration of hydrogen in optical fibre cables | 
 |  |  |  |  |  | L.28	: External additional protection for marinized terrestrial cables | 
 |  |  |  |  |  | L.29	: As-laid report and maintenance/repair log for marinized terrestrial cable installation | 
 |  |  |  |  |  | L.30	: Markers on marinized terrestrial cables | 
 |  |  |  |  |  | L.31	: Optical fibre attenuators | 
 |  |  |  |  |  | L.32	: Protection devices for through-cable penetrations of fire-sector partitions | 
 |  |  |  |  |  | L.33	: Periodic control of fire extinction devices in telecommunication buildings | 
 |  |  |  |  |  | L.34	: Installation of Optical Fibre Ground Wire (OPGW) cable | 
 |  |  |  |  |  | L.35	: Installation of optical fibre cables in the access network | 
 |  |  |  |  |  | L.36	: Single-mode fibre optic connectors | 
 |  |  |  |  |  | L.37	: Optical branching components (non-wavelength selective) | 
 |  |  |  |  |  | L.38	: Use of trenchless techniques for the construction of underground infrastructures for telecommunication cable installation | 
 |  |  |  |  |  | L.39	: Investigation of the soil before using trenchless techniques | 
 |  |  |  |  |  | L.40	: Optical fibre outside plant maintenance support, monitoring and testing system | 
 |  |  |  |  |  | L.41	: Maintenance wavelength on fibres carrying signals | 
 |  |  |  |  |  | L.42	: Extending optical fibre solutions into the access network | 
 |  |  |  |  |  | L.43	: Optical fibre cables for buried application | 
 |  |  |  |  |  | L.44	: Electric power supply for equipment installed as outside plant | 
 |  |  |  |  |  | L.45	: Minimizing the effect on the environment from the outside plant in telecommunication networks | 
 |  |  |  |  |  | L.46	: Protection of telecommunication cables and plant from biological attack | 
 |  |  |  |  |  | L.47	: Access facilities using hybrid fibre/copper networks | 
 |  |  |  |  |  | L.48	: Mini-trench installation technique | 
 |  |  |  |  |  | L.49	: Micro-trench installation technique | 
 |  |  |  |  |  | L.50	: Requirements for passive optical nodes: Optical distribution frames for central office environments | 
 |  |  |  |  |  | L.51	: Passive node elements for fibre optic networks – General principles and definitions for characterization and performance evaluation | 
 |  |  |  |  |  | L.52	: Deployment of Passive Optical Networks (PON) | 
 |  |  |  |  |  | L.53	: Optical fibre maintenance criteria for access networks | 
 |  |  |  |  |  | L.54	: Splice closure for marinized terrestrial cables (MTC) | 
 |  |  |  |  |  | L.55	: Digital database for marine cables and pipelines | 
 |  |  |  |  |  | L.56	: Installation of optical fibre cables along railways | 
 |  |  |  |  |  | L.57	: Air-assisted installation of optical fibre cables | 
 |  |  |  |  |  | L.58	: Optical fibre cables: Special needs for access network | 
 |  |  |  |  |  | L.59	: Optical fibre cables for indoor applications | 
 |  |  |  |  |  | L.60	: Construction of optical/metallic hybrid cables | 
 |  |  |  |  |  | L.61	: Optical fibre cable installation by floating technique | 
 |  |  |  |  |  | L.62	: Practical aspects of unbundling services by multiple operators in copper access networks | 
 |  |  |  |  |  | L.63	: Safety procedures for outdoor installations | 
 |  |  |  |  |  | L.64	: ID tag requirements for infrastructure and network elements management | 
 |  |  |  |  |  | L.65	: Optical fibre distribution of access networks | 
 |  |  |  |  |  | L.66	: Optical fibre cable maintenance criteria for in-service fibre testing in access networks | 
 |  |  |  |  |  | L.67	: Small count optical fibre cables for indoor applications | 
 |  |  |  |  |  | L.68	: Optical fibre cable maintenance support, monitoring and testing system for optical fibre cable networks carrying high total optical power | 
 |  |  |  |  |  | L.69	: Personal digital assistant requirements and relevant data structure for infrastructure and network elements management | 
 |  |  |  |  |  | L.70	: Managing active electronics in the outside plant | 
 |  |  |  |  |  | L.71	: Design, construction, and installation of copper networks for broadband access including copper networks connected to optical fibre networks | 
 |  |  |  |  |  | L.72	: Databases for optical access network infrastructure | 
 |  |  |  |  |  | L.73	: Methods for inspecting and repairing underground plastic ducts | 
 |  |  |  |  |  | L.74	: Maintenance of cable tunnels | 
 |  |  |  |  |  | L.75	: Test, acceptance and maintenance methods of copper subscriber pairs, indoor network and structured cabling | 
 |  |  |  |  |  | L.76	: Copper loop requirements for various technologies including indoor and structured cabling | 
 |  |  |  |  |  | L.77	: Installation of optical fibre cables inside sewer ducts | 
 |  |  |  |  |  | L.78	: Optical fibre cable construction for sewer duct applications | 
 |  |  |  |  |  | L.79	: Optical fibre cable elements for micro-duct blowing-installation application | 
 |  |  |  |  |  | L.80	: Operations support system requirements for infrastructure and network elements management using ID techonology | 
 |  |