The NT-300 is your stand-alone ISDN network termination (NT1) unit which provides the 2B1Q basic rate interface needed between the ISDN network line and the subscriber terminal equipment. You get two 64 Kbps B-channels for simultaneous voice/data...
ISDN NT1, NT1 build-in ISDN TA, VoIP Gateway, Broadband Router...
adapter...
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