3Com MSR 50, MSR 30, MSR 20 manual Fic-Hnde, Connecting the FIC-2E&M/FIC-4E&M card on site

FIC-HNDE 197

Table 141 Pinouts of E&M interface cable (Bell V 4-wire)

Router side

		Signal at switch side (Bell V
RJ-45 Pin	Signal	4-wire)
8	SG (negative power supply	-

	ground)
n	■ Because it is hard to know the type of the switch to be connected and the
	connectors used by the switch, you need to make interface cables for
	connecting the FIC-2E&M/FIC-4E&M card on site.
	■ To ensure the EMC of the router, install a ferrite core near the connector of the
	self-made E&M interface cable by the router side.

Connecting the Interface Cable

c

CAUTION:

■If outdoor cabling is involved, consider to install a special lightning arrester at the input end of the interface cable for better lightning protection.

■Before you connect a port, read its label carefully; a wrong connection can cause damages to the interface card and even the device.

■According to Bell V, cables for FXS/FXO/E&M cards do not provide a PGND wire. For this reason, a loop should be formed through the earth ground between the router and the connected switch. In practice, the PGND wire of the switch can be connected to the chassis of the router.

■In connecting an interface cable, note to connect the end with ferrite core to the router for EMC sake.

Step 1: Insert the ferrite core end of the cable into the to-be-connected RJ-45 port on the interface card.

Step 2: Connect the other end of the cable as follows:

■For an FIC-FXS card, connect to a phone-set, fax or AT0 loop trunk of telephone exchange.

■For an FIC-FXS, connect to a regular subscriber line of telephone exchange.

■For an E&M card, connect to an E&M trunk on the telephone exchange.

FIC-HNDE

Introduction FIC-HNDE, the high network data encryption card, delivers IPSec and hardware-based IP packet encryption. It supports multiple hardware encryption/decryption and hash algorithms, thus providing encryption with high performance and reliability.

The FIC-HNDE is intended for low-end and mid-range modular routers. Installed with an FIC-HNDE, the main board of your router can implement VPN with encryption provided by the FIC-HNDE in addition to IP packet forwarding.