Software release

• Junos OS Release 6.1 and later

Description

• Two DS-3 ports
• Power requirement: 0.31 A @ 48 V (14.9 W)
• Supports up to 128 logical customer channels per DS3 port

Hardware features

• Support for NxT1 by interoperating with the Link Services and Multilink Services PICs, using MLPPP and MLFR protocols
• Onboard DSU functionality

Software features

• Support for four data-link connection identifiers (DLCIs) per logical customer channel
• DS3 alarm and event counting
• DS3 alarm and event detection
• DS3 diagnostics and loopback control
• DS3 framing: M13, C-bit
• T1 framing: super frame (SF) and extended super frame (ESF)
• Encapsulations:
  • High-Level Data Link Control (HDLC)
  • Frame Relay
  • Circuit cross-connect (CCC)
  • Point-to-Point Protocol (PPP)

Cables and connectors

• Custom 10 ft/3.05 m posilock to BNC male cable, separate Rx and Tx

LEDs

One tricolor per port:

• 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

• Far-end block error (FEBE)
• Parity bit (P-bit) disagreements
• Path priority error
• Alarm indication signal (AIS)
• Loss of signal (LOS)
• Out of frame (OOF)
• Yellow alarm
• AIS received
• Simultaneous BERT functionality
• Idle received
• Local and remote loopback