
APPENDIX A
User's Manual
Built-in  Modem
| Networkcontrolunit(NCU) | 
 | 
 | |
| Type of NCU | AA | 
 | 
 | 
| Type of line | Telephone line (analog only) | ||
| Type of dialing | Pulse | 
 | 
 | 
| 
 | Tone | 
 | 
 | 
| Control command | AT commands | 
 | 
 | 
| 
 | 
 | ||
| Monitor function | Computer’s speaker | 
 | |
| Communicationspecifications | 
 | 
 | |
| Communication | Data: | Fullduplex | |
| system | Fax: | Halfduplex | |
| Communication | Data | 
 | 
 | 
| protocol | 
 | V.21/V.22/V.22bis/V.32 | |
| 
 | (FormerCCITT) | /V.32bis/V.34/V.90 | |
| 
 | Bell | 
 | 103/212A | 
| 
 | Fax | 
 | 
 | 
| 
 | 
 | V.17/V.29/V.27ter | |
| 
 | (FormerCCITT) | /V.21ch2 | |
| Communication | Data transmission and reception | ||
| speed | 300/1200/2400/4800/7200/9600/12000/14400/ | ||
| 
 | 16800/19200/21600/24000/26400/28800/31200/ | ||
| 
 | 33600 bps | 
 | 
 | 
| 
 | Data reception only with V.90 | ||
| 
 | 28000/29333/30666/32000/33333/34666/36000/37333/ | ||
| 
 | 38666/40000/41333/42666/44000/45333/46666/48000/ | ||
| 
 | 49333/50666/52000/53333/54666/56000bps | ||
| 
 | Fax | 
 | 
 | 
| 
 | 2400/4800/7200/9600/12000/14400bps | ||
| Transmitting level | 
 | 
 | |
| Receiving level | 
 | 
 | |
| Input/output | 600 ohms ±30% | 
 | 
 | 
| impedance | 
 | 
 | 
 | 
| Error correcting | MNP class 4 and  | ||
| Data compression | MNP class 5 and  | ||
| Power supply | +3.3V (supplied by computer) | ||
