3Com MSR 20, MSR 30, MSR 50 Interface attributes of SIC-1EPRI/SIC-1E1-F, Attribute Description

28CHAPTER 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