IBM CORPORATION
INTERNAL MODEM 2400BPS
| 
 Card Type  | 
 Modem (asynchronous)  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Maximum Data Rate  | 
 2400bps  | 
| 
 Data Bus  | 
 8-bit ISA  | 
| 
 Data Modulation Protocol  | 
 Bell 103/212A ITU-T V.22bis  | 

| 
 CONNECTIONS  | ||||||
| 
 Function  | 
 Label  | 
 Function  | 
 Label  | |||
| 
 Line out  | 
 CN1  | 
 Speaker adapter connection  | 
 CN3  | |||
| 
 Line in  | 
 CN2  | |||||
| 
 SERIAL PORT ADDRESS  | ||
| 
 Setting  | 
 E1  | 
 E2  | 
| 
 COM1 (3F8h)  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
| 
 COM2 (2F8h)  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
Proprietary AT Command Set
See document V2029 for a full command summary.