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Cisco Asynchronous, Async/Sync, HSSI & Serial Network Modules

The Cisco Asynchronous, Async/Sync, Synchronous & Serial Network Modules (A, A/S, T, HSSI) are modular devices that provide serial connectivity solutions for your network. With a host of models available you are able to select from several port densities and synchronous and asynchronous alternatives to best manage your network’s expanding requirements.