Juniper Networks M120 manual DS3 PIC, Software features Cables and connectors LEDs

DS3 PIC

Software features

Cables and connectors

LEDs

Alarms, errors, and events

■DS3 functionality:

■C-bit framing

■B3ZS line encoding

■DS3 diagnostics and loopback control

■DS3 alarm and event counting and detection

■Per-packet counts and byte counts

■Local and remote loopback testing, as well as BERT testing per DS3

■DS3 far-end alarm and control (FEAC) channel support

■Encapsulations:

■High-Level Data Link Control (HDLC)

■Frame Relay

■Circuit cross-connect (CCC)

■Point-to-Point Protocol (PPP)

■Custom 10-ft (3.05-m) posilock SMB to BNC male cable, separate Rx and Tx (provided)

One tricolor per port:

■Off—Not enabled

■Green—Online with no alarms or failures

■Amber—Online with alarms for remote failures

■Red—Active with a local alarm; router has detected a failure

■Alarm indication signal (AIS)

■Bit error rate test (BERT) functionality on PIC (you can configure one DS3 channel in BERT mode and configure the remaining channels to transmit and receive normal traffic)

■Equipment failure (does not affect service)

■Far-end block error (FEBE)

■Frame error

■Idle code, Idle received

■Local and remote loopback

■Loss of signal (LOS)

■Out of frame (OOF)

■Parity bit (P-bit) disagreements

■Path parity error

■Yellow alarm bit (X-bit) disagreements

DS3 PIC ■ 49