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T1/FT1 Network Interface Module (NIM) for NetVanta 1000, 3000, and 4000 Series of access router, with a DSX-1 interface to user's voice equipment like a PBX.
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T1/FT1 Network Interface Module (NIM) for NetVanta 1000, 3000, and 4000 Series of access router, with a DSX-1 interface to user's voice equipment like a PBX.
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