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SDH - ATM

Hello

Do you know what is the diffrence between SPA-2XOC3-ATM (2-port OC-3c/STM-1 ATM Shared Port Adapter) and SPA-2XOC3-POS (2-port OC3/STM1 POS Shared Port Adapters)?

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SDH - ATM

The difference, as stad\ted in the data sheets, is that the first can only and exclusively be used for ATM (Asynchnous Transfer Mode) services, while the second, can be used only and exclusively on POS (Packet Over Sonet) circuits.

However, two ATM interfaces will alos work in "back to back" mode over a local fiber, or SONET/DSH circuit.

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