Juniper-networks J4350 Bedienungsanleitung Seite 57

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Physical Interface Modules Overview
Figure 15: Channelized T1/E1 PIM
STATUS
PORT 1
PORT 0
STATUS
g002377
The D ual-Po
rtChannelizedT1orE1PIMprovidesthefollowingkeyfeatures:
Onboard net
work processor
Two-port ch
annelization
Interfaces
that are so ftware configurable as T1 or E1
Clear-chan
nel, fractional, and channelized operation
Lower laten
cy 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.70
4, and G.706 E1 standards compliance
Independen
t internal and external clocking system
Loopback, b
it 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 configu rin g and monitoring alarms informatio n in
the J-seri
es Services Router Administration Guide.
For instal
lingandremovingaPIM,see“ReplacingaPIM”onpage144.
Field-Replaceable PIMs 37
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