Juniper Networks M120 Network Router User Manual


 
T1 PIC
JUNOS 8.0R2 and later (Type 1)
NOTE: This PIC is not supported in JUNOS Release 8.1R1.
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 sourceinternal 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 connectorCables and connectors
One tricolor per port:
OffNot enabled
GreenOnline with no alarms or failures
AmberOnline with alarms for remote failures
RedActive with a local alarm; router has detected a failure
LEDs
112 T1 PIC
M120 Internet Router PIC Guide