Netopia R2121 - Manual (Page 257)

Technical Specifications and Safety Information G-1
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Pinouts for Auxiliary Port Modem Cable
HD-15 DB-25
Pin 1 Ground Pin 1 (not used)
Pin 2 TDA Pin 2 TD
Pin 3 TDB Pin 3 RD
Pin 4 RDA Pin 4 RTS
Pin 5 RDB Pin 5 CTS
Pin 6 (not used) Pin 6 DCE Ready
Pin 7 DTR Pin 7 Ground
Pin 8 CTS Pin 8 RLSD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Shield
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Shield
1300 ohms
BRAID