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 |  | Dual 2FXS Plus - Expansion module - 2 ports
 $337.85 |  | |  | Dual 2FXO - Expansion module - 2 ports
 $299.76 |
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 |  | Dual E&M/TO Module - Voice interface card - 2 ports
 $307.49 |  | |  | DUAL Nx56/64 - Network adapter - serial - 2 ports
 $502.68 |
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|  | Dual 2FXO Plug-On - Expansion module - 2 ports
 $299.76 |  | |  | Dual E&M/TO Module Plug-On - Voice interface card - 2 ports
 $308.96 |
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|  | T1 ESF CSU Smart Card - DSU/CSU - T-1
 $647.80 |  |  |  | OCU DP Dual - Expansion module - Frame Relay - 4 ports
 $520.90 |
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|  | HSSI Card - Expansion module - HSSI - serial, English
 $789.59 |  | |  | Expansion module - V.35
 $437.07 |
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 |  | IMUX-56/64 - Control processor - ISDN, Frame Relay, English
 $1,532.48 |  | |  | ADTRAN - Network adapter - SFP - Gigabit EN - 1000Base-LX
 $365.94 |
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 |  | DSU/CSU - serial
 $179.37 |  |  |  | QUAD T1/PRI - DSU/CSU - ISDN, HDLC - ISDN PRI - 4 ports - T-1, English
 $1,707.39 |
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 |  | Expansion module
 $750.36 |  |  |  | Expansion module - 8 ports
 $992.59 |
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 |  | DUAL Nx56/64 - Expansion module - serial
 $516.42 |  |  |  | Voice interface card - 4 ports
 $233.43 |
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|  | Voice interface card - 4 ports
 $168.12 |  |  |  | QUAD NT1 - Network adapter - ISDN - ISDN BRI, phone - 4 ports
 $356.10 |
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 |  | Remote management adapter - 10Base-T, serial
 $1,142.37 |  |  |  | Legacy Data Module - Serial adapter - expansion slot - SDLC, Frame Relay, RS-232, PPP - serial RS-232 - 4 ports
 $868.94 |
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|  | Expansion module
 $232.69 |  |  |  | ADTRAN Dual Video Module - Network adapter - serial - 2 ports
 $1,856.18 |
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|  | ADTRAN Bank Controller Unit - Expansion module
 $224.39 |
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