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3.3
Dial-Up Line 50-Pin Connector (CC48-21L)
These 50-pin RJ21 connectors are used on racks with an RJ21 Dial-up
Phone Line Interface Board. We provide this interface board to facilitate
RJ21 hook-up by your local telephone company.
Multi-Tech
designation
2
5
These numbers refer to the position of these connectors on the back panel of the
rack as shown in Figure 2-3.
Slot 9-16
• • • • • • •
• • • • • • •
• • • • • • •
• • • • • • •
2 Wire Leased Line/
4 Wire Transmit Pair
Slot 9-16
1
These will be used for dial
back-up telephone lines in both
2 and 4-wire leased-line
operation.
2
Dial-Up
• • • • • • •
• • • • • • •
4 Wire Receive Pair
Slot 9-16
3
50POS.-CHAMP-CONNECTOR
50POS.-CHAMP-CONNECTOR
4
2 Wire Leased Line/
4 Wire Transmit Pair
Slot 1-8
• • • • • • •
• • • • • • •
• • • • • • •
• • • • • • •
Dial-Up
Slot 1-8
6
4 Wire Receive Pair
Slot 1-8
• • • • • • •
• • • • • • •
5
3 - 3
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