170CHAPTER 4: FLEXIBLE INTERFACE CARDS

The FE1 operating mode supported by the FIC-8E1-F card allows only one n 64 kbps bundle to be formed on each interface, where n = 1 to 31. However, a FIC-8E1 card allows arbitrary grouping of 31 channels and therefore multiple bundles.

The FIC-8E1-F card does not support PRI mode.

n Given a FIC-8E1 card, the system automatically creates a serial interface for each timeslot bundle formed on a controller E1 interface.

Interface Attributes The following table describes the interface attributes of the FIC-8E1/FIC-8E1-F cards.

Table 116 Interface attributes of the FIC-8E1/FIC-8E1-F card

 

Description

 

Attribute

FIC-8E1/FIC-8E1-F (75-ohm)

FIC-8E1/FIC-8E1-F (120-ohm)

 

 

 

Connector

DB-68

 

 

 

 

 

Number of

1

 

 

connectors

 

 

 

 

 

 

Interface standard

G.703

 

 

 

 

Interface rate

2.048 Mbps

 

 

 

 

Cable type

75-ohm 8E1 conversion cable

120-ohm 8E1 conversion cable

 

 

Operating mode

E1, CE1, ISDN PRI (only supported by the FIC-8E1)

 

FE1 (only supported by the FIC-8E1-F)

 

 

 

 

Supported service

1)

Backup

 

 

2)

Terminal access service

 

 

3)

ISDN PRI (only supported by the FIC-8E1)

 

 

 

 

Interface LEDs FIC-8E1 and FIC-8E1-F panels are similar. The following figures illustrate the FIC-8E1 panels.

Figure 207 FIC-8E1 (120-ohm) panel

Figure 208 FIC-8E1 (75-ohm) panel

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3Com MSR 50, MSR 30, MSR 20 manual Interface attributes of the FIC-8E1/FIC-8E1-F card, FIC-8E1 120-ohm panel