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Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 3 Multifunctional Interface Modules
3-35
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directly if the cable is long enough; or
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after extending the cable if it is not long enough, as shown in the following figure:
Router
DDN, etc
RJ45
Network interface connector
RJ45
Straight-through network cable
RJ45
shielding network cable)
T1 cable (100-ohm straight-through
Figure 3-45
Extending a T1 cable
Step 3: Check the behavior of the LINK LED on the MIM-T1 or MIM-T1-F panel. It is
OFF when the line is faulty and signal is out of synchronization. In this case, check the
link.
3.9 MIM-8T1/MIM-8T1-F Module
3.9.1 Introduction
I. MIM-8T1 module
MIM-8T1, the 8-port channelized T1/PRI interface module, transmits, receives, and
processes eight channels of T1 data traffic. In addition, you can use the module for
other purposes, such as CT1 access and the ISDN PRI function.
II. MIM-8T1-F module
MIM-8T1-F, the 8-port fractional T1 interface module is different from the 8T1 module in
the sense that:
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The FT1 operating mode supported by the MIM-8T1-F module allows only one n ×
64 kbps or n × 56 kbps bundle to be formed on each interface, where n = 1 to 24.
However, the MIM-8T1 module allows arbitrary grouping of 24 channels and
therefore multiple bundles.
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The MIM-8T1-F module does not support PRI mode.
Note:
Given a MIM-8T1 module, the system automatically creates a serial interface for each
timeslot bundle formed on a controller T1 interface.