Hardware manual

3 - 3
2
5
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.
TIPA1 26 1 RINGA1 TIPA9 26 1 RINGA9 TIPB1 27 2 RINGB1 TIPB9 27 2 RINGB9 TIPC1 28 3 RINGC1 TIPC9 28 3 RINGC9 TIPA2 29 4 RINGA2 TIPA10 29 4 RINGA10 TIPB2 30 5 RINGB2 TIPB10 30 5 RINGB10 TIPC2 31 6 RINGC2 TIPC10 31 6 RINGC10 TIPA3 32 7 RINGA3 TIPA11 32 7 RINGA11 TIPB3 33 8 RINGB3 TIPB11 33 8 RINGB11 TIPC3 34 9 RINGC3 TIPC11 34 9 RINGC11 TIPA4 35 10 RINGA4 TIPA12 35 10 RINGA12 TIPB4 36 11 RINGB4 TIPB12 36 11 RINGB12 TIPC4 37 12 RINGC4 TIPC12 37 12 RINGC12 TIPA5 38 13 RINGA5 TIPA13 38 13 RINGA13 TIPB5 39 14 RINGB5 TIPB13 39 14 RINGB13 TIPC5 40 15 RINGC5 TIPC13 40 15 RINGC13 TIPA6 41 16 RINGA6 TIPA14 41 16 RINGA14 TIPB6 42 17 RINGB6 TIPB14 42 17 RINGB14 TIPC6 43 18 RINGC6 TIPC14 43 18 RINGC14 TIPA7 44 19 RINGA7 TIPA15 44 19 RINGA15 TIPB7 45 20 RINGB7 TIPB15 45 20 RINGB15 TIPC7 46 21 RINGC7 TIPC15 46 21 RINGC15 TIPA8 47 22 RINGA8 TIPA16 47 22 RINGA16 TIPB8 48 23 RINGB8 TIPB16 48 23 RINGB16 TIPC8 49 24 RINGC8 TIPC16 49 24 RINGC16
50 25 50 25
50POS.-CHAMP-CONNECTOR
50POS.-CHAMP-CONNECTOR
J18
J17
2
Dial-Up
Slot 9-16
2 Wire Leased Line/
4 Wire Transmit Pair
Slot 9-16
1
4 Wire Receive Pair
Slot 9-16
3
4
2 Wire Leased Line/
4 Wire Transmit Pair
Slot 1-8
Dial-Up
Slot 1-8
5
6
4 Wire Receive Pair
Slot 1-8
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These will be used for dial
back-up telephone lines in both
2 and 4-wire leased-line
operation.
Multi-Tech
designation
These numbers refer to the position of these connectors on the back panel of the
rack as shown in Figure 2-3.