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Figure 31: Channelized T1/E1/ISDN PRI PIM
The Dual-Port Channelized T1/E1/ISDN PRI PIM provides the following key features:
■ Onboard network processor
■ Two-port channelization
■ Interfaces that are software configurable as T1 or E1 channels or ISDN PRI
B-channels
■ 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) and
4098 bytes (for ISDN PRI services)
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/E1/ISDN PRI PIMs, see “ISDN
RJ-45 Connector Pinout” on page 241.
To install or remove a PIM, see “Replacing a PIM” on page 174.
Channelized T1/E1/ISDN PRI LEDs indicate PIM and port status. Table 27 on page
59 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.
58 ■ Field-Replaceable PIMs
J2320, J2350, J4350, and J6350 Services Router Getting Started Guide