Siemens AC75 manual FAX Commands, FAX parameters, Fax Result Codes, AT+FCLASS Parameter, Mod=3

AC75 AT Command Set

12. FAX Commands

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12.FAX Commands

This chapter describes the AT commands used for fax communications. Please note that fax related commands are not supported by Java.

If the ME is acting as a fax modem for a PC based fax application (e.g. "WinFax") it is necessary to select the proper Service Class (Fax Class) provided by the ME. The ME reports its Service Class capabilities, i.e. the cur- rent setting and the range of services available. This is provided by the AT+FCLASS command.

Service Classes supported by the ME:

AT+FCLASS Parameter	Service class	Reference, Standard
0	Data modem	e.g. TIA/EIA-602 or ITU V.250
1	Service Class 1	EIA/TIA-578-A

During an active fax connection the AT parser functionality on the used channel is limited to the AT commands which according to the ITU V.250 and T.31 specifications are mandatory for fax communications. The functions of these AT commands are usually supported by commonly used fax applications.

12.1FAX parameters

This section describes the parameter <mod> used by some of the fax-specific AT commands. To find out the value(s) actually supported by the <mod> parameter use the test commands either in on-hook or off-hook mode.

Parameter Description

<mod>(num)

Modulation scheme
3	V21 Ch2 - 300 bps
24	V.27ter - 2400 bps
48	V.27ter - 7200 bps
72	V.29 - 7200 bps
96	V.29 - 9600 bps

Note

•For AT+FRH and AT+FTH, parameter <mod> can take value 3 only, while AT+FRM and AT+FTM never support

<mod>=3.

12.1.1Fax Result Codes

Table 12.1: Fax Result Codes

Result Code

+FCERROR

Meaning

This facsimile error message notifies the DTE that the DCE has received a different signal (tone or carrier) than expected. This allows the DTE to recover by requesting the DCE to look for an alternative tone or carrier signal.

AC75_ATC_V01.002	Page 352 of 569	10/30/06
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