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rb:telecoms [03/10/2018 00:49]
rb:telecoms [04/02/2019 17:29] (current)
andrew [Kilostream]
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 +====== Telecoms ======
  
 +
 +===== POTS =====
 +
 +
 +[[rb:​cat5tolju|Cat 5 to LJU wiring for BT phones]] \\
 +
 +[[rb:​structured|Structured Cabling]] \\
 +
 +[[rb:​bt-sigunit61|BT Signalling Unit 61B]] \\
 +[[rb:​bt-sigunit101|BT Signalling Unit 101A]] \\
 +
 +
 +[[rb:​bt-transformerunit9a|BT Transformer Unit 9A/A]] \\
 +
 +===== IDSN =====
 +
 +[[rb:​scii-isdn|SCII Telecom ISDN PCI card]]\\
 +
 +===== Data services =====
 +
 +I have very little information on the Kilostream LTU and Megastream NTU devices, they are just bits I have come across as they have been scrapped out, so if anyone has any further info, please let me know (website@rainsbrook.co.uk),​ eg. what unit was used where, and what determines which LTU is used. These seem to be customer units, so what (if anything) went at the exchange end, or were they point to point with an identical unit at each customer end? Would the LTUs connect to a PBX? The Kilostream NTE would connect to a 2 or 4 wire data?
 +
 +===== Kilostream =====
 +
 +{{ :​rb:​kilostream_technical.pdf |BT Kilostream info sheet}}
 +
 +[[rb:​testsocket|Test Socket]] \\
 +[[rb:​bt-shelf4a|Ascom | BT / Ascom Shelf 4a NTE]] and NTU6B / NTU11B \\
 +
 +[[rb:​bt-ntu6a|BT NTU6A/2]] \\
 +[[rb:​bt-ntu7a|BT NTU7A/2]] \\
 +
 +[[rb:​bt-ltu16|BT LTU16a]] \\
 +[[rb:​bt-ltu23|BT LTU23c]] Rack Mount\\
 +[[rb:​bt-ltu25|BT LTU25d / e]] \\
 +[[rb:​bt-ltu30|BT LTU30d]] \\
 +[[rb:​bt-ltu35|BT LTU35a]] \\
 +[[rb:​bt-ltu37|BT LTU37a]] \\
 +[[rb:​bt-ltu45|BT LTU45a]] Rack Mount\\
 +
 +[[rb:​unknownltu|Unknown LTU]] \\
 +
 +
 +
 +
 +===== Megastream =====
 +
 +[[rb:​bt-eqpt-term-24a-25a|BT ETU (Eqmt Terminating Unit) No. 24A / 25A]] \\
 +
 +[[rb:​bt-nte8a|BT NTE8a]] \\
 +
 +[[rb:​bt-nte16U|BT NTE16U/7A]] \\
 +
 +[[rb:​bt-nte51-2|BT NTE51 & NTE52]] \\
 +
 +[[rb:​bt-nte1h-7a|BT NTE 1H/7A]] \\
 +
 +===== PDH (Plesiochronous Digital Hierarchy) =====
 +
 +[[rb:​dmc-4x2mb|Digital Microwave 4x2Mb/s to 8MB/s multiplexer]] \\
 +
 +[[rb:​dmc-16x2mb|Digital Microwave 16x2Mb/s to 34MB/s multiplexer]] \\
 +
 +===== SDH (Synchronous Digital Hierarchy) =====
 +
 +[[rb:​oms840|Marconi OMS840 Add Drop Multiplexer]] \\
 +
 +[[rb:​bt-nte1h-7a|BT NTE 1H/7A]] \\
 +
 +[[rb:​bt-nte16U|BT NTE16U/7A]] \\
 +
 +[[rb:​pdh-sdh|Nokia PDH and Marconi SDH]] \\