Siemens TSU NT 22 O » History » Revision 7
Revision 6 (laforge, 12/21/2023 04:10 PM) → Revision 7/9 (laforge, 12/21/2023 04:24 PM)
h1. Siemens TSU NT 22 O
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This is a Optical Line Termination (OLT) for two E1 circuits within the Siemens Fastlink system.
It speaks to the ONU via a bi-directional single-mode optical fibre with a supposedly proprietary protocol/framing. It might be the Siemens TCM (Time Compression Multiplex) in which the same wavelength is used in both directions in an alternating manner (similar to the Up0 in the electrical/copper domain).
h2. Hardware
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As one can see, it actually houses a module in the [[Siemens_FastLink]] form-factor with its two DIN backplane connectors. This likely means the module is (mostly?) identical to the LT side used in the transport network, the LTO/LT module.
h2. EEPROM
attachment:siemens_tsu_nt22o_p42026-B251-A22-01.bin
h2. Literature
* general marketing flyer about Siemens Fastlink: attachment:siemens_fastlink.pdf
