H3C Technologies H3C MSR 50 - Manual (Page 56)

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These cables are optional items. Please select one when purchasing a SIC-1SAE; by default, the cable
is not provided.
Connecting the interface cable
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Before plugging or unplugging the interface cable connected to the SIC-1SAE, power off the router.
Online insertion or removal tends to damage the port and even the device.
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Before connecting the SIC-1SAE to a remote device, identify the type of the device, such as its
synchronous/asynchronous mode and DTE/DCE mode, and the signaling criterion, baud rate and
time clock required by the access device.
Step1 Choose a synchronous/asynchronous serial interface cable depending on the type of the interface on
the remote device.
Step2 Plug the DB-28 connector of the cable to the DB-28 port on the SIC-1SAE.
Step3 Connect the other end of the SAE cable to:
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The port of CSU/DSU if the WAN is a DDN line.
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The serial port on an analog modem if the WAN is a dial-up line.
Step4 Check the behavior of the LINK LED on the module panel. It is OFF when the line is faulty and signal
is out of synchronization. Check the line for the cause.
Analog Modem Interface Module
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SIC-1AM
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SIC-2AM
SIC-1AM/SIC-2AM
Introduction
1/2-port analog modem interface module (SIC-1AM/SIC-2AM) integrates the functions of asynchronous
interface and external modem, that is, allowing 1/2 channel(s) of remote modem subscribers to directly
access the Router. They support:
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Data rate of 56 kbps.
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Accessing and handling analog signals and transmitting the processed data to the Router host
through the serial interface bus. And also, processing the data received from the host and then
transmitting them to the PSTN via the telephone port.
Interface attributes
The interface attributes of SIC-1AM/SIC-2AM are given in the following table: