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DEFINITY TN556D ISDN BRI LINE
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12 Ports connecting to ISDN-BRI terminals
Up to 8 ports can be used for adjunct switch application interface (ASAI) links
Each port operates at 192 kbps and has two B-channels and one D-channel
Has multipoint support - 24 terminals can be connected where each terminal uses one B-channel and shares the
Provides end-to-end outplulse signalling when the circuit pack is in tie-trunk mode with a TN2185B.
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