Juniper Networks J4350 - Manual (Page 57)

Physical Interface Modules Overview
Figure 15: Channelized T1/E1 PIM
STATUS
PORT 1
PORT 0
STATUS g002377
The Dual-Port Channelized T1 or E1 PIM provides the following key features:
Onboard network processor
Two-port channelization
Interfaces that are software configurable as T1 or E1
Clear-channel, fractional, and channelized operation
Lower latency due to the addition of a Freescale processor
Maximum MTU value of 4500 bytes (for channelized T1 or E1 interface)
NOTE: For a clear-channel T1 or E1 interface, the maximum MTU is 9150 bytes.
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
For pinouts of cable connectors for channelized T1 and E1 PIMs, see “E1
and T1 RJ-48 Cable Pinouts” on page 196.
For alarms, see the configuring and monitoring alarms information in
the J-series Services Router Administration Guide.
For installing and removing a PIM, see “Replacing a PIM” on page 144.
Field-Replaceable PIMs 37