
Huawei OSN3500: OptiX OSN 3500 STM-64 hybrid MSTP optical transmission platform with 15 service slots for SDH and packet networks.
The Huawei OSN3500 is the OptiX OSN 3500, an STM-64 hybrid MSTP platform that carries SDH, PDH and Ethernet services on one chassis. Its unified switching design runs in TDM, packet (MPLS-TP) and hybrid modes.
The subrack has 15 service slots. With a high-capacity cross-connect board it switches 200 Gbit/s of higher-order and 20 Gbit/s of lower-order TDM traffic, plus 160 Gbit/s of packet traffic. Maximum counts per subrack are 12 STM-64, 60 STM-16, 56 GE and 16 10GE interfaces, with up to 504 E1s. Protection covers two-fibre and four-fibre MSP rings, 1+1 linear MSP and SNCP.
The subrack measures 722 x 497 x 295 mm and runs from -48 V or -60 V DC. Operators use it as a metro core and aggregation node, and many have used it to move traffic from SDH towards packet transport while keeping legacy E1 circuits.
Tech-Star supplies OSN 3500 subracks and boards new and refurbished for engineers extending or sparing OptiX transmission networks.

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| Manufacturer | Huawei |

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| Platform | Huawei OptiX OSN transmission platform |
|---|---|
| Manufacturer | Huawei |
| Key Features | STM-64 level MSTP platform; 15 service slots, up to 12x STM-64 interfaces; unified SDH/packet switching architecture |
|---|---|
| Applications | Metro and backbone SDH/MSTP transmission; SDH-to-packet transport migration; carrier network expansion and sparing |
| Compatibility | Huawei OptiX OSN board family; SDH, PDH, Ethernet, RPR, ATM, DDN and SAN services |
| Specifications | STM-64 rated MSTP subrack; 2/4-fibre MSP ring and 1+1/1:n linear protection; SNCP/SNCMP/SNCTP and DNI protection support |
| Platform | Huawei OptiX OSN transmission platform |
| Manufacturer | Huawei |
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