Description | |
Hardware features | High-performance throughput on each port at speeds up
to 2.048 Mbps, full duplex Maximum transmission units (MTUs) of up to 4500 bytes Per-interface diagnostics and loopback control Per-interface shaping on output Per-interface alarm and event counting and detection HDB3 line coding 4-bit CRC for G.704 framed mode Per-port loop timing Balanced and unbalanced modes Packet buffering, Layer 2 parsing Full bit error rate test (BERT)
|
Software features | Integrated support for G.703 unframed mode and G.704 framed
mode with CRC; this feature is user-configurable Note:
The G.704 implementation supports speeds slower
than 2.048 Mbps; multiple channels within a single E1 interface are
not supported. Configurable clock source: Internal or loop Encapsulations: High-Level Data Link Control (HDLC) Frame Relay Circuit cross-connect (CCC) Point-to-Point Protocol (PPP)
|
Cables and connectors | |
LEDs | Off—Not enabled Green—Online with no alarms or failures Yellow—Online with alarms for remote failures Red—Active with a local alarm; router has detected
a failure
|
Alarms, errors, and events | Alarm indication signal (AIS) Bipolar violations Excessive zeros Far-end block errors (FEBE, E-bit errors) Loss of frame (LOF) Loss of signal (LOS) Local and remote loopback diagnostics Yellow alarm bit (X-bit) disagreements
|