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The Total Access 850 Bank Controller module (L1) operates andmanages all installed modules and activates the network T1 interfaceonly
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The Total Access 850 Bank Controller module (L2) operates andmanages all installed modules and activates the network T1 and DSX-1interfaces
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Total Access 850 Router Controller Unit (RCU) providing supportfor TDM applications
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Total Access 850 module providing a single synchronous V.35interface
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