3Com 6000 Series Installation Manual page 66

66 C 8: F I
HAPTER LEXIBLE NTERFACE
C
ARDS
Description
4-port Channelized FIC
Attribute 4-port Fractional E1 FIC
Connector DB25
Connector 1
number
Interface G.703, G.704
standard
Interface speed 2.048Mbps
Cable
E1 75-ohm non-balanced coaxial cable
E1 120-ohm balanced twisted-pair cable
120-ohm 4E1 adapter cable (4-port Channelized/4-port Fractional E1 FIC)
75-ohm 4E1 adapter cable (4-port Channelized/4-port Fractional E1 FIC)
Coaxial connector, network connector, 75-to-120-ohm adapter (with BNC
connector)
Operating
E1, CE1, ISDN PRI (only supported by 4-port Channelized FIC)
mode
FE1 (only supported by 4-port Fractional E1 FIC)
Supported Backup
service
Leased line access
ISDN PRI (only supported by 4-port Channelized FIC)