ZOOM TELEPHONICS, INC.
VFP 28.8
| 
 Card Type  | 
 Fax, Modem (asynchronous)  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Maximum Data Rate  | 
 28.8Kbps  | 
| 
 Maximum Fax Rate  | 
 14.4Kbps  | 
| 
 Data Bus  | 
 8-bit ISA  | 
| 
 Fax Class  | 
 Unidentified  | 
| 
 Data Modulation Protocol  | 
 Unidentified  | 
| 
 Fax Modulation Protocol  | 
 Unidentified  | 
| 
 Error Correction/Compression  | 
 Unidentified  | 
V2021
| 
 CONNECTIONS  | ||||||
| 
 Function  | 
 Label  | 
 Function  | 
 Label  | |||
| 
 Line out  | 
 CN1  | 
 Line in  | 
 CN2  | |||
| 
 SERIAL PORT ADDRESS/INTERRUPT SELECTION  | |||
| 
 Setting  | 
 IRQ  | 
 JP1  | 
 JP2  | 
| 
 COM1 (3F8h)  | 
 4  | 
 Pins 3 & 5, 4 & 6 closed  | 
 Pins 1 & 3 closed  | 
| 
 COM2 (2F8h)  | 
 3  | 
 Pins 2 & 4, 3 & 5 closed  | 
 Pins 2 & 4 closed  | 
| 
 COM3 (3E8h)  | 
 4  | 
 Pins 4 & 6, 1 & 3 closed  | 
 Pins 1 & 3 closed  | 
| 
 í COM4 (2E8h) | 
 3  | 
 Pins 1 & 3, 2 & 4 closed  | 
 Pins 2 & 4 closed  | 
| 
 MISCELLANEOUS TECHNICAL NOTES  | 
Note: Diagram not available.  | 
Proprietary AT Command Set
| 
 MNP - EXTENDED SERVICES  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] -Kn [cmds]  | 
| 
 Description:  | 
 Controls V.42 LAPM to MNP10 conversion  | 
| 
 Command  | 
 Function  | 
| 
 -K0  | 
 MNP extended services disabled  | 
| 
 í -K1 | 
 MNP extended services enabled  | 
| 
 -K2  | 
 MNP extended services enabled; suppress MNP extended services initiation on V.42 LAPM answer detection phase.  | 
| 
 MNP10 - FALLBACK  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] -Qn [cmds]  | 
| 
 Description:  | 
 Allows MNP10 to fall back to 2400bps  | 
| 
 Command  | 
 Function  | 
| 
 -Q0  | 
 MNP10 at 2400bps disabled  | 
| 
 í -Q1 | 
 MNP10 at 2400bps enabled  | 
| 
 MNP10 - LINK NEGOTIATION  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] *Hn [cmds]  | 
| 
 Description:  | 
 Sets the speed at which MNP10 link negotiation will occur  | 
| 
 Command  | 
 Function  | 
| 
 í *H0 | 
 Link will be negotiated at highest possible speed  | 
| 
 *H1  | 
 Link will be negotiated at 1200bps  | 
| 
 *H2  | 
 Link will be negotiated at 4800bps  | 
| 
 MNP10 - POWER LEVEL ADJUST  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] )Mn [cmds]  | 
| 
 Description:  | 
 Controls automatic transmit power level adjustment during MNP 10 link negotiation  | 
| 
 Command  | 
 Function  | 
| 
 í )M0 | 
 Power level adjustment disabled  | 
| 
 )M1  | 
 Power level adjustment enabled  | 
| 
 TRANSMISSION LEVEL - CELLULAR  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] @Mn [cmds]  | 
| 
 Default:  | 
 26  | 
| 
 Range:  | 
 0,1,2-10,11-31  | 
| 
 Unit:  | 
 -1dBm  | 
| 
 Description:  | 
 Sets the signal level for transmission while in cellular mode  | 
| 
 Command  | 
 Function  | 
| 
 í @M0 | 
 -26 dBm  | 
| 
 @M1  | 
 -30 dBm  | 
| 
 @M2-@M10  | 
 -10 dBm  | 
| 
 V.32 - COMPROMISE EQUALIZER  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] :En [cmds]  | 
| 
 Description:  | 
 Controls V.32 compromise equalizer  | 
| 
 Command  | 
 Function  | 
| 
 :E0  | 
 Equalizer disabled  | 
| 
 í :E1 | 
 Equalizer enabled  |