The XRT86VL32 is a two-channel 1,544 Mbps or 2,048 Mbps DS1/E1/J1 framer and LIU integrated solution from Exar featuring the company's R3 Technology (reconfigurable, relayless redundancy). The physical interface is optimised with internal impedance, and with the patented pad structure, the device provides protection from power failures and hot swapping. Each framer has its own framing synchroniser and transmit-receive slip buffers. The slip buffers can be independently enabled or disabled as required and can be configured to frame the common DS1/E1/J1 signal formats. It also contains a transmit and overhead data input port for each channel, that permits data line terminal equipment direct access to the out-bound T1/E1/J1 frames. In the receive direction, it has complementary blocks to the transmit path. The device is compliant with all T1/E1/J1 specifications.
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