Juniper J-series Services Router J4350 Getting Started Manual page 80

J2320, J2350, J4350, and J6350 Services Router Getting Started Guide
NOTE: For a clear-channel T1 or E1 interface, the maximum MTU is 9150 bytes.
For pinouts of cable connectors for channelized T1/E1/ISDN PRI PIMs, see "ISDN
RJ-45 Connector Pinout" on page 239.
To install or remove a PIM, see "Replacing a PIM" on page 172.
Channelized T1/E1/ISDN PRI LEDs indicate PIM and port status. Table 27 on page
58 describes the meaning of the LED states.
NOTE: The STATUS LED displays channelized T1 or E1 port activity and alarms only.
It does not display ISDN PRI B-channel or D-channel status.
Table 27: LEDs for Channelized T1/E1/ISDN PRI PIMs
58
Field-Replaceable PIMs
Maximum MTU value of 4500 bytes (for channelized T1 or E1 interface) and
4098 bytes (for ISDN PRI services)
56-Kbps and 64-Kbps modes
ANSI T1.102, T1.107, and T1.403 standards compliance
G.703, G.704, and G.706 E1 standards compliance
Independent internal and external clocking system
Loopback, bit error rate test (BERT), T1 facilities data link (FDL), and long buildout
diagnostics
Label Color
ONLINE Green
Unlit
STATUS Green
Red
Yellow
Unlit
State Description
On steadily PIM is online and
operational.
Off PIM is not online.
On steadily Port is online with no
alarms or failures, and
the physical layer is
active.
Online Port is active with a
local alarm. The
router has detected a
failure and the
physical layer is
inactive.
Online Port is online with
alarms for remote
failures.
Offline Port is disabled.