3Com MSR 50 Network Router User Manual


 
28 CHAPTER 2: SMART INTERFACE CARDS
Step 1: Choose a synchronous/asynchronous serial interface cable depending on
the type of the interface on the remote device.
Step 2: Plug the DB-28 connector of the cable to the DB-28 port on the SIC-1SAE.
Step 3: Connect the other end of the SAE cable to:
Port of CSU/DSU if the WAN is a DDN line.
Serial port on an analog modem if the WAN is a dial-up line.
Step 4: Check the behavior of the LINK LED on the card panel. It is OFF when the
line is faulty and signal is out of synchronization. Check the line for the cause.
SIC-1EPRI/SIC-1E1-F
Introduction 1-port channelized E1/CE1/PRI compatible interface card (SIC-1EPRI) supports:
Transmission/Receiving and handling of E1 data streams;
CE1 (channelized E1) access;
ISDN PRI function;
Remote loopback and local loopback functions, facilitating fault test and
location.
It is possible to use the card for multiple purposes through different
configurations.
Following are the differences between SIC-1EPRI and 1-port Fractional E1 interface
card (SIC-1E1-F):
FE1 mode of SIC-1E1-F can support only one channel bundle (the rate is n ×
64kbps, n=1-31), while the 31 channels can be grouped into multiple arbitrary
bundles by SIC-1EPRI;
SIC-1E1-F does not support PRI mode.
Interface Attributes The interface attributes of SIC-1EPRI/SIC-1E1-F are given in the following table:
Table 5 Interface attributes of SIC-1EPRI/SIC-1E1-F
Attribute Description
Connector type DB-15
Number of connectors 1
Interface standard G.703, G.704
Interface rate 2.048 Mbps
Cable type 75-ohm non-balanced coaxial cable
(DB-15 to BNC)
120-ohm balanced twisted-pair cable
(DB-15 to RJ-45)
Coaxial connector, network interface
connector and 75-ohm to 120-ohm
adapter