Siemens TSU NT 22 O » History » Revision 8
Revision 7 (laforge, 12/21/2023 04:24 PM) → Revision 8/9 (laforge, 12/21/2023 04:32 PM)
h1. Siemens TSU NT 22 O {{thumbnail(20221120_115432.jpg)}} {{thumbnail(20221120_115441.jpg)}} 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. There are two wavelengths It might be the Siemens TCM (Time Compression Multiplex) in use: * 1550 nm which the same wavelength is used in the downlink both directions in an alternating manner (similar to the NT * 1300 nm Up0 in the uplink direction to the LT electrical/copper domain). h2. Hardware {{thumbnail(20221120_115756.jpg)}} {{thumbnail(20221120_115810.jpg)}} {{thumbnail(20221120_115910.jpg)}} {{thumbnail(20221120_115829.jpg)}} {{thumbnail(20221120_115821.jpg)}} 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