HAYES MICROCOMPUTER PRODUCTS, INC.
OPTIMA 144B + FAX144
| 
 Modem Type  | 
 Data (synchronous/asynchronous)/Fax  | 
| 
 Maximum Data Rate  | 
 14.4Kbps  | 
| 
 Maximum Fax Rate  | 
 14.4Kbps  | 
| 
 Data Bus  | 
 External  | 
| 
 Fax Class  | 
 Class I & II  | 
| 
 Data Modulation Protocol  | 
 Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis  | 
| 
 Fax Modulation Protocol  | 
 V.17, V.27ter, V.29  | 
| 
 Error Correction/Compression  | 
 MNP2-5, V.42, V.42bis  | 

| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Line in  | 
 CN1  | 
 Line out  | 
 CN2  | 
| 
 BASE I/O ADDRESS SELECTION  | ||
| 
 Address  | 
 SW1/1  | 
 SW1/2  | 
| 
 COM1:  | 
 On  | 
 On  | 
| 
 COM2:  | 
 On  | 
 Off  | 
| 
 COM3:  | 
 Off  | 
 On  | 
| 
 COM4:  | 
 Off  | 
 Off  | 
| 
 HAYES ESP™ MODE  | ||
| 
 Mode  | 
 SW1/3  | 
 SW1/4  | 
| 
 16450 UART mode  | 
 On  | 
 On  | 
| 
 16550 UART mode  | 
 On  | 
 Off  | 
| 
 16550 UART with hardware flow control  | 
 Off  | 
 On  | 
| 
 Disabled  | 
 Off  | 
 Off  | 
| 
 BASE I/O ADDRESS SELECTION  | ||
| 
 Address  | 
 JP1  | 
 JP2  | 
| 
 180h  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 188h  | 
 Pins 2 & 3 closed  | 
 Pins 1 & 2 closed  | 
| 
 250h  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
| 
 258h  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  |