3Com MSR 20, MSR 30, MSR 50 manual SIC-1FXS/SIC-1FXO SIC-2FXS/SIC-2FXO

	SIC-1FXS/SIC-1FXO & SIC-2FXS/SIC-2FXO 37
Table 11 Description of the LEDs on SIC-1AM/SIC-2AM panel
LED	Description
LINK	OFF means the link is idle. ON means the
	connection has been established. Blinking
	means the connection is being set up.
ACT	OFF means the link is idle. Blinking means
	data is being transmitted or received.

Interface Cable The connection cables for SIC-1AM/SIC-2AM are telephone cables with ferrite

	core. Both ends of the cables are RJ11 connectors. For cable pinouts, refer to
	Low-End and Mid-Range Series Routers Cable Manual.
c	CAUTION: Relevant cables are included in the standard shipment package of
	SIC-1AM/SIC-2AM.

Connecting the Interface Cable

c

CAUTION:

■You should connect a cable to the port with the correct mark. Misplugging is prone to impair the SIC/MIM and even damage the router.

■You are recommended to install a special lightning arrester on the input end of the telephone line in order to avoid the lightning effects more efficiently.

If the SIC has been properly installed, follow these steps to connect the cable:

Step 1: Insert the end with ferrite core into one LINE port of SIC-1AM/SIC-2AM;

Step 2: Plug the other end of the cable into the telephone wall jack;

SIC-1FXS/SIC-1FXO &

SIC-2FXS/SIC-2FXO

Introduction 1/2-port voice subscriber circuit interface card (SIC-1FXS/SIC-2FXS) and 1/2-port voice AT0 analog trunk interface card (SIC-1FXO/SIC-2FXO) serve to access and handle 1/2 channel(s) of analog voice signals over data communication networks. The differences between SIC-FXS and SIC-FXO are listed below:

■SIC-FXS cards are analog subscriber line cards that provide ordinary analog telephone and fax access and also can connect AT0 loop trunks of exchanges;

■SIC-FXO cards are loop trunk cards that provide access of common subscriber lines of exchanges.

c CAUTION: While using SIC-FXS/SIC-FXO, you must ensure that the H3C Routers can be connected to IP networks or other WANs.

Interface Attributes The interface attributes of SIC-1FXS/SIC-1FXO and SIC-2FXS/SIC-2FXO are given in the following table: