Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
rb:telecoms [12/06/2018 23:43]
andrew
rb:telecoms [03/10/2018 00:49] (current)
andrew [SDH (Synchronous Digital Hierarchy)]
Line 7: Line 7:
 [[rb:​cat5tolju|Cat 5 to LJU wiring for BT phones]] \\ [[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 ===== ===== IDSN =====
Line 14: Line 21:
 ===== Data services ===== ===== 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? What would they connect toa PBX or some data modem?+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 ===== ===== Kilostream =====
 +
 +{{ :​rb:​kilostream_technical.pdf |BT Kilostream info sheet}}
  
 [[rb:​testsocket|Test Socket]] \\ [[rb:​testsocket|Test Socket]] \\
Line 24: Line 33:
 [[rb:​bt-ntu7a|BT NTU7A/2]] \\ [[rb:​bt-ntu7a|BT NTU7A/2]] \\
  
 +[[rb:​bt-ltu16|BT LTU16a]] \\
 [[rb:​bt-ltu23|BT LTU23c]] \\ [[rb:​bt-ltu23|BT LTU23c]] \\
-[[rb:​bt-ltu25|BT LTU25d]] \\+[[rb:​bt-ltu25|BT LTU25d ​/ e]] \\ 
 +[[rb:​bt-ltu30|BT LTU30d]] \\
 [[rb:​bt-ltu35|BT LTU35a]] \\ [[rb:​bt-ltu35|BT LTU35a]] \\
 +[[rb:​bt-ltu37|BT LTU37a]] \\
 [[rb:​bt-ltu45|BT LTU45a]] \\ [[rb:​bt-ltu45|BT LTU45a]] \\
  
-[[rb:bt-sigunit101|BT Signalling Unit 101A]] \\+[[rb:unknownltu|Unknown LTU]] \\ 
  
  
Line 35: Line 48:
 ===== Megastream ===== ===== Megastream =====
  
 +[[rb:​bt-eqpt-term-24a-25a|BT Eqmt Terminating No. 24A / 25A]] \\
  
 [[rb:​bt-nte8a|BT NTE8a]] \\ [[rb:​bt-nte8a|BT NTE8a]] \\
Line 53: Line 67:
  
 [[rb:​oms840|Marconi OMS840 Add Drop Multiplexer]] \\ [[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]] \\
  

rb/telecoms.1528843415.txt.gz · Last modified: 12/06/2018 23:43 by andrew