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•Supports two slots for either WAN interface cards (WICs) or voice interface cards (VICs). •Supports one VIC-only slot. •Supports the following WICs: ISDN BRI (U and S/T), 56- or 64-kbps DSU/CSU, FT1/T1 DSU/CSU, WIC-1ADSL, WIC-1ENET (Ethernet), highspeed serial, dual-serial, and 2Async/Sync. •Supports the following VICs: 2FXS, 2FXO, 2E&M, F2XO-EU, 2FXO-M3, and 2-port ISDN Voice-BRI. •Changes in WAN interface configuration can be made as your network requirements change.
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