User's Guide for ZyXEL Omni 56K USB Modem
5-12
5.2.2 Service Class 2 CommandsThe following Class 2 commands are supported and implemented as per TIA(Telecommunications Industry Association) PN2388 (dated 8/20/1990):Table 17. Command Syntax
COMMAND SYNTAX DESCRIPTION
+<command>=<value> Execute a command or set a parameter.
+<command>=? Read permissible settings.
+<command>? Read current settings.
Table 18. Supported Commands (per TIA PN2388 dated 8/20/1990)
COMMAND DESCRIPTION VALUE
Auto-answer mode parameter:
Answer as set by +FCLASS. n=0
+FAA=n
DCE answers and auto-determines type. n=1
+FBADLIN=
<value> Bad line threshold (number of consecutive bad lines for a bad
page parameter):
Determine if Copy Quality OK on the T.30 flow chart. <value>=0
to 255; a value of 0 implies that error checking is disabled.
0 to 255
Phase C data bit order:
Select direct bit order. n=0
+FBOR=n
Select reversed bit order in receiving mode for phase C data. n=1
+FBUF? Buffer size; read only parameter:
Allow DTE to determine the characteristics of the DCE’s buffer
size.
+FCIG="string" Local fax station ID string, for polling Rx.
+FCLASS=nService class selection:
Refer to +FCLASS Class 1 command in previous section.
+FCON DCE responds fax connection.
Copy quality check capability parameter:
No copy quality check capability. n=0
Only check 1D phase C data. n=1
+FCQ=n
Check both 1D and 2D phase C data. n=2
"Capability to receive" parameter:
DCE does not receive message data or poll a remote device. n=0
+FCR=n
DCE receives message data or polls a remote device. n=1
DCE capabilities parameters:
Vertical resolution: Normal; 98 lpi. vr=0
Vertical resolution: Fine; 196 lpi. vr=1
Bit rate: 2400 bit/s; V.27ter. br=0
Bit rate: 4800 bit/s; V.27ter. br=1
Bit rate: 7200 bit/s; V.29 or V.17. br=2
+FDCC=vr, br, wd,
ln, df, ec, bf, st
Bit rate: 9600 bit/s; V.29 or V.17. br=3