Multi-Tech Systems MT3334SMI manual Class 1 Fax Commands Fax MOD Modulation Parameter Values

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 on-hook.

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 non-standard Class 2 modem (based on an early draft of the Class 2.0 standard).

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".

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