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Cisco (PA-MC-T3) Expansion Module - The PA-MC-E3 provides one multi-channel E3, medium-speed serial interface. The physical E3 link on the PA-MC-E3 port adapter consists of two female BNC connectors, one for receive (RX) and one for transmit (TX). You must use 75-ohm coaxial interface cables with male BNC connectors to connect the PA-MC-E3 interface with external E3 equipment. The PA-MC-E3 divides the E3 signal stream into four multi-channel E2 data channels and then into 16 E1 lines. The E3 is designed to comply with the CCITT/ITU G.703 physical layer standard. E3 provides access to services at E3 (34.368 Mbps) data rates, transferring data bidirectionally.
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