Cisco Third-Generation 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card Expansion module
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Cisco Third-Generation 2-Port G.703 Multiflex Trunk Voice/WAN Interface Card Expansion module
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Cisco High-Speed WAN Interface Card - Expansion module - HWIC - RS-232 RS-530 X.21 V.35 RS-449 RS-530A
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Cisco 2 port Mltflx Trunk Voice New Retail, NIM-2MFT-T1_E1= (New Retail Data T1/E1 Mod)
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