Juniper Networks Juniper M-series M10i - Manual (Page 75)

T1 PIC
■ JUNOS 6.1 and later Software release
■ Four T1 ports
■ Power requirement: 0.08 A @ 48 V (3.7 W)
■ Supports clear channel T1 per port (1.544 Mbps per channel)
■ Supports attenuation up to –12 dBm
Description
■ Per-port loop timing
■ Onboard DSU functionality for T1 connectivity
Hardware features
■ ESF and SF framing
■ B8ZS and AMI coding
■ ESF CSU counters, WRT impairments, and CRC checking
■ Local DS1 line loopback, remote line loopback
■ Configurable clock source—internal or loop
■ Encapsulations:
■ High-Level Data Link Control (HDLC)
■ Frame Relay
■ Circuit cross-connect (CCC)
■ Point-to-Point Protocol (PPP)
Software features
■ 100-ohm RJ-48 connector Cables and connectors
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
LEDs
■ Alarm indication signal (AIS)
■ Bipolar violations
■ Excessive zeros
■ Far-end block errors (FEBE, E-bit errors)
■ Loss of frame (LOF), Loss of signal (LOS)
■ Yellow alarm bit (X-bit) disagreements
Alarms, errors, and
events
T1 PIC ■ 75
T1 PIC