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Supports four queues per port
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Random early detection (RED)
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Transmitter Signal Element Timing is looped from the timing received on the Transmitted
Signal Element DCE. EIA-530 ports support the ability to invert the Transmit Data Element.
The EIA-530 ports support the following rates:
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2.048 Mbps
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2.341 Mbps
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2.731 Mbps
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3.277 Mbps
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4.09 Mbps
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5.461 Mbps
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8.192 Mbps
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16.384 Mbps
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V.35 ports support up to 2.048 Mbps
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X.21 ports support up to 10 Mbps
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Encapsulations:
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High-Level Data Link Control (HDLC)
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Frame Relay
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Circuit cross-connect (CCC)
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Translational cross-connect (TCC)
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Point-to-Point Protocol (PPP)
Software features
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Two DB-25 male connectors (one per port, included with PIC)
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V.35 requires an EIA-530 to V.35 cable and connects to a V.35 DTE 34-pin Winchester
type male cable (one per port)
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X.21 requires an EIA-530 to X.21 cable and connects to a X.21 DTE DB-15 male cable
Cables and connectors
Three bicolor per port:
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Data set ready (DSR):
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Green—DSR is detected or ignored
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Red—DSR expected but not present
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Data carrier detect (DCD):
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Green—DCD is detected or ignored
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Red—DCD expected but not present
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Resynchronization:
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Green—Keepalives are being received
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Red—Data terminal ready (DTR) toggled from low to high (resynchronization pulses
are being sent)
LEDs
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Per-port packet and byte counters
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Resynchronization counters:
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Number of resynchronizations initiated
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Time of last resynchronization
Instrumentation
(counters)
EIA-530 PIC ■ 55
EIA-530 PIC