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VoIP-Adapter ISDN Consumer AVM FritzBox - VoIP-Cube Deutschland
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Patton SmartNode DTA SN-DTA/2BIS4V/EUI, 2x BRI/So (1xNT, 1xTE), voice
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Patton SmartNode 4634 3 BRI/ISDN VoIP Gateway-Router (SIP / H.323 / M
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Definition of ISDN | PCMag
