2400 BPS External Modem  (250-3026)    Pinouts         Faxback Doc. # 5031

Serial Connector:

┌────────┬──────────┬─────────────────────────────────┬──────────────┐
│Pin #   │ Label    │ Description                     │ Direction    │
├────────┼──────────┼─────────────────────────────────┼──────────────┤
│ 1      │  N/A     │ Protective ground               │ N/A          │
│ 2      │  RXD     │ Received data                   │ to modem     │
│ 3      │  TXD     │ Transmitted data                │ from modem   │
│ 4      │  RTS     │ Request to send                 │ to modem     │
│ 5      │  CTS     │ Clear to send                   │ from modem   │
│ 6      │  DSR     │ Data set ready                  │ from modem   │
│ 7      │  N/A     │ Signal ground (common return)   │ N/A          │
│ 8      │  RLSD    │ Received line signal detector   │ from modem   │
│ 12     │  CI      │ Modem speed indicator           │ from modem   │
│ 20     │  DTR     │ Data terminal ready             │ to modem     │
│ 22     │  RI      │ Ring indicator                  │ from modem   │
└────────┴──────────┴─────────────────────────────────┴──────────────┘


(smm 07/28/93)