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Showing 73 to 84 of 84 products
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NEC ESIB(8)-U10 / ETU ELECTRONIC STATION INTERFACE UNIT (Stock # 750207) Refurbished
Product features ESIB(8)-U10 / ETU ELECTRONIC STATION INTERFACE UNIT The Electronic Station Interface ETU contains 8 circuits. Each circuit can support one digital multi-line terminal...
Product features ESIB(8)-U10 / ETU ELECTRONIC STATION INTERFACE UNIT The Electronic Station In...
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BRT (4)-20 ETU / NEC Basic Rate Interface Unit (Stock # 750201) NEW
Product featuresBASIC RATE INTERFACE UNIT The Basic Rate Interface Unit provides 4 channels (8 voice channels) for ISDN Basic Rate Interface. When connecting to a...
Product featuresBASIC RATE INTERFACE UNIT The Basic Rate Interface Unit provides 4 channels (8 vo...
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NEC BRT (4)-U10 ETU / BASIC RATE INTERFACE UNIT ~ Stock# 750200 ~ Factory Refurbished
Product features BASIC RATE INTERFACE UNIT The Basic Rate Interface Unit provides 4 channels (8 voice channels) for ISDN Basic Rate Interface. When connecting to...
Product features BASIC RATE INTERFACE UNIT The Basic Rate Interface Unit provides 4 channels (8 v...
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NEC BRT (4)-U10 ETU / BASIC RATE INTERFACE UNIT (Stock # 750200) NEW
Product features BASIC RATE INTERFACE UNIT The Basic Rate Interface Unit provides 4 channels (8 voice channels) for ISDN Basic Rate Interface. When connecting to...
Product features BASIC RATE INTERFACE UNIT The Basic Rate Interface Unit provides 4 channels (8 v...
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NEC DTI-U40 ETU / DIGITAL TRUNK INTERFACE UNIT (Stock # 750196) Refurbished
Product features DTI-U40 ETU DIGITAL TRUNK INTERFACE UNIT (required for T1 K-CCIS) The Digital Trunk Interface Unit provides for the termination of T1/Fractional T1 (24...
Product features DTI-U40 ETU DIGITAL TRUNK INTERFACE UNIT (required for T1 K-CCIS) The Digital Tr...
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NEC DTI-U30 ETU / DIGITAL TRUNK INTERFACE UNIT (Stock # 750194) Refurbished
Product featuresDTI-U30 ETU DIGITAL TRUNK INTERFACE UNIT (required for T1 K-CCIS) The Digital Trunk Interface Unit provides for the termination of T1/Fractional T1 (24 DS-0...
Product featuresDTI-U30 ETU DIGITAL TRUNK INTERFACE UNIT (required for T1 K-CCIS) The Digital Tru...
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NEC DTI-U30 ETU / DIGITAL TRUNK INTERFACE UNIT (Stock # 750194) NEW
Product featuresDTI-U30 ETU DIGITAL TRUNK INTERFACE UNIT (required for T1 K-CCIS) The Digital Trunk Interface Unit provides for the termination of T1/Fractional T1 (24 DS-0...
Product featuresDTI-U30 ETU DIGITAL TRUNK INTERFACE UNIT (required for T1 K-CCIS) The Digital Tru...
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NEC TLI (2)-U10 ETU TIE LINE INTERFACE UNIT (Stock # 750180) NEW
Product featuresTLI (2)-U10 ETU TIE LINE INTERFACE UNIT The Tie Line Interface ETU supports the termination and operation of up to two E&M Tie lines...
Product featuresTLI (2)-U10 ETU TIE LINE INTERFACE UNIT The Tie Line Interface ETU supports the t...
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NEC DID (4)-U10 ETU ~ DIRECT INWARD DIALING INTERFACE UNIT (Stock # 750170) Refurbished
Product featuresDID (4)-U10 ETU DIRECT INWARD DIALING INTERFACE UNIT The Direct Inward Dialing Interface supports up to four DID or four 2-way DID lines. Immediate,...
Product featuresDID (4)-U10 ETU DIRECT INWARD DIALING INTERFACE UNIT The Direct Inward Dialing In...
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NEC DID (4)-U10 ETU ~ DIRECT INWARD DIALING INTERFACE UNIT (Stock # 750170) NEW
Product featuresDID (4)-U10 ETU DIRECT INWARD DIALING INTERFACE UNIT The Direct Inward Dialing Interface supports up to four DID or four 2-way DID lines. Immediate,...
Product featuresDID (4)-U10 ETU DIRECT INWARD DIALING INTERFACE UNIT The Direct Inward Dialing In...
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NEC COI(8)-U10 ETU / CENTRAL OFFICE INTERFACE UNIT (Stock # 750160) Refurbished
Product featuresCENTRAL OFFICE INTERFACE UNIT The Central Office Interface Unit supports 8 outside (CO/PBX) lines. The outside lines can be a combination of Loop Start...
Product featuresCENTRAL OFFICE INTERFACE UNIT The Central Office Interface Unit supports 8 outsid...