Juniper Networks J2320 사용자 설명서

Figure 31: Channelized T1/E1/ISDN PRI PIM

The Dual-Port Channelized T1/E1/ISDN PRI PIM provides the following key features:

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Onboard network processor

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Two-port channelization

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Interfaces that are software configurable as T1 or E1 channels or ISDN PRI
B-channels

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Clear-channel, fractional, and channelized operation

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Lower latency due to the addition of a Freescale processor

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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.

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56-Kbps and 64-Kbps modes

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ANSI T1.102, T1.107, and T1.403 standards compliance

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G.703, G.704, and G.706 E1 standards compliance

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Independent internal and external clocking system

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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.

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.

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Field-Replaceable PIMs

J2320, J2350, J4350, and J6350 Services Router Getting Started Guide