Software release
- JUNOS 6.4 and later
Description
- 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
Hardware features
- Per-port loop timing
- Onboard DSU functionality for T1 connectivity
Software 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)
Cables and connectors
- 100-ohm RJ-48 connector
LEDs 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
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)
- Yellow alarm bit (X-bit) disagreements