162CHAPTER 4: FLEXIBLE INTERFACE CARDS

FIC-1E1-F/FIC-2E1-F/FIC-4E1-F

FIC-1E1-F/FIC-2E1-F/FIC-4E1-F, the 1-/2-/4-port fractional E1 interface card, differs from the FIC-1E1/FIC-2E1/FIC-4E1 primarily in the sense that:

The FE1 operating mode supported by the E1-F cards allows only one n 64 kbps bundle to be formed on each interface, where n = 1 to 31. However, an E1 card allows arbitrary grouping of 31 channels and multiple bundles.

The FIC-E1-F cards do not support PRI mode.

Interface Attributes The following table describes the interface attributes of the FIC-E1 and FIC-E1-F cards.

Table 112 Interface attributes of the FIC-E1 and FIC-E1-F cards

 

Description

 

 

Attribute

FIC-1E1/FIC-1E1-F

FIC-2E1/FIC-2E1-F

FIC-4E1/FIC-4E1-F

 

 

 

 

Connector

DB-15

DB-15

DB-25

 

 

 

 

Number of

1

2

1

connectors

 

 

 

 

 

 

 

Interface

G.703, G.704

 

 

standard

 

 

 

 

 

 

 

Interface rate

2.048 Mbps

 

 

 

 

 

Cable type

E1 75-ohm unbalanced coaxial cable

 

 

E1 120-ohm balanced twisted-pair cable

 

 

120-ohm 4E1 adapter cable (FIC-4E1/FIC-4E1-F)

 

 

75-ohm 4E1 adapter cable (FIC-4E1/FIC-4E1-F)

 

 

Coaxial connector, network connector, 75-to-120-ohm adapter (with BNC

 

connector)

 

 

 

 

Operating mode

E1, CE1, ISDN PRI (only supported by the FIC-E1 cards)

 

FE1 (only supported by the FIC-E1-F cards)

 

 

 

 

 

Supported

Backup

 

 

service

Leased line

 

 

 

 

 

ISDN PRI (only supported by the FIC-E1 cards)

Interface LEDs The following figure illustrates the FIC-1E1 panel.

Figure 194 FIC-1E1 panel

The following figure illustrates the FIC-2E1 panel.

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Image 162
3Com MSR 30, MSR 20 Following figure illustrates the FIC-2E1 panel, Interface attributes of the FIC-E1 and FIC-E1-F cards