Chapter 3 - Class 1 Fax Commands
Table 3-1. Fax MOD (Modulation) Parameter Values
Value | Modulation | Speed (bps) | Requirements |
3 | V.21 ch.2 | 300 | required for +FTH & +FRH |
24 | V.27ter | 2400 | required for +FTM & +FRM |
48 | V.27ter | 4800 | required for +FTM & +FRM |
72 | V.29 | 7200 | optional |
73 | V.17 | 7200 | optional |
74 | V.17 w/st | 7200 | optional |
96 | V.29 | 9600 | optional |
97 | V.17 | 14400 | optional |
98 | V.17 w/st | 14400 | optional |
121 | V.17 or V.33 | 12000 | optional |
122 | V.17 w/st | 12000 | optional |
145 | V.17 or V.33 | 14400 | optional |
146 | V.17 w/st | 14400 | optional |
All other codes are reserved. "V.17 w/st" indicates V.17 short training (aka, "quick train"). All of the above commands return an ERROR result code if entered when the ModemModule is
Use the command syntax +<command>=? to ask for the valid range of values supported. For example, if you entered +FTH=?, the Class 1 ModemModule would return 3 (a Class 2 ModemModule would return 3,24,48,72,73, 74, 96).
Command: | +FCLASS? <Enter> |
Function: | Display Current Class |
Values: | 0, 1, 2 |
Default: | 0 (data modem) |
Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range.
Description: | +FCLASS? requests the current Service Class of the ModemModule, as shown |
| below. |
Result Code | Meaning |
0indicates a data modem
1indicates a Service Class 1 (fax/data) modem
2indicates a
Command: | +FCLASS=? <Enter> |
Function: | Display Service Class Capabilities |
Values: | 0, 1 (other values are reserved) |
Default: | 0 (data modem) |
Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range.
Description: The +FCLASS=? command displays the set of Service Classes supported by the modem from the list of values (e.g., 0,1 for a modem that supports data communications plus fax Service Class 1). This command returns the service class or classes available with the modem. The modem returns a list of all supported values, separated by commas if more than one class is supported. For example, a modem that supports data communications and Class 1 fax would respond with "0,1".
MT3334SMI | 33 |