The Nokia 1850 Transport Service Switch 320 (TSS-320H) platform provides converged, connection-oriented support for Carrier Ethernet MEF2.0 services and packet services, as well as native and emulated support for TDM and SDH services. It is suited for edge and metro regional sites.
This packet optical transport (POT) platform supports any mix of traffic, from all-circuit to all-packet, with an up to 1.2Tb/s switching capacity fabric and 100 Gigabit Ethernet optical interfaces.
As part of a large 1850 TSS portfolio for POT networks, the TSS-320H supports a combination of transport technologies — including Carrier Ethernet, Multi-Protocol Label Switching-Transport Profile (MPLS-TP), wavelength division multiplexing (WDM) and TDM.
Two protected switching fabrics, each offering two options:
| Period | Owner / Marketer | Notes |
|---|---|---|
| Circa 2008 – 2016 | Alcatel‑Lucent | Launched the 1850 TSS family—including models 5, 40, 100, 160, 320—as Packet‑Optical Transport platforms supporting mixed circuit and packet traffic with universal-switch matrix architecture. |
| 2016 – Present | Nokia | After acquiring Alcatel‑Lucent in 2016, Nokia continued supporting the TSS family under its legacy portfolio; firmware through R7.x / R10.x / R25.x, parts, and documentation remain available. |
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