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54 AR700 Series Router
C613-03087-00 Rev E
Figure 25: Pin wiring for modem cable to connect asyn port on AR725, AR745 or
AT-AR024 to DB25 male (modem) port
Figure 26: Pin wiring for modem cable to connect asyn port on AR750S, AR750S-DP, or
AR770S to DB25 male (modem) port
DB25 Male
(to modem)
1
2
3
4
5
6
7
8
20
22
6
5
8
7
4
2
3
1
→
←
→
←
←
←
→
←
(TXD)
(RXD)
(RTS)
(CTS)
(GND)
(DCD)
(DTR)
(RING)
Not connected
Not connected
Notes:
(1) Other pins are not connected.
(2) → Output from switch or router; ← Input to switch or router.
(3) Cable version 1.0.
MODEM
RJ45
(to switch or router)
DB25 Male
(to modem)
1
2
3
4
5
6
7
8
20
22
3
6
1
8
4
5
7
2
1
→
←
→
←
→
→
←
→
(TXD)
(RXD)
(RTS)
(CTS)
(GND)
(GND)
(DCD)
(DTR)
Not connected
Not connected
Not connected
Notes:
(1) Other pins are not connected.
(2) → Output from switch or router; ← Input to switch or router.
(3) Cable version 1.0.
modem_ar750
RJ-45
(to router)