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Patton SN4120/2BIS4V/EUI, SmartNode ISDN BRI PSTN VoIP Gateway, 2 BRI/So TE, 4 voice/fax calls, 1x 10/100 Ethernet
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TDU-4000 - Telephone disconnect unit for Phone, Fax, Data, STU and STE equipment, 0-56 Kb, one line interface, one instrument in - Fiber Multiplexers - iComTech
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