Code          Simple Action Command Description
-------         --------------------------------------------------
 <NUL>          This is something I would recommend
 <DLE>          Complies with IS-101
   p            Pause Transmit Data State("Immediate Command").
		Complies with IS-101
   r            Resume Transmit Data State("Immediate Command").
		Complies with IS-101
 <ETX>          End Transmit Data State ("Stream Command").
		Complies with IS-101.
 <CAN>          Clear transmit buffer of voice data("Immediate Command").
		Complies with IS-101.
 <FS>or<DC2>    Concatenate transmit data streams("Stream Command").
		Complies with IS-101.
 <DC4>          Clear transmit buffer of voice data and return to command
		mode("Immediate Command"). Not defined in IS-101.
Code Event Report Description ------- -------------------------------------------------- <DLE> Two contiguous <DLE><DLE> codes indicate a single <DLE> in the data stream. Complies with IS-101 <ETX> End Data State. Complies with IS-101 0 DTMF '0' received. Complies with IS-101 1 DTMF '1' received. Complies with IS-101 2 DTMF '2' received. Complies with IS-101 3 DTMF '3' received. Complies with IS-101 4 DTMF '4' received. Complies with IS-101 5 DTMF '5' received. Complies with IS-101 6 DTMF '6' received. Complies with IS-101 7 DTMF '7' received. Complies with IS-101 8 DTMF '8' received. Complies with IS-101 9 DTMF '9' received. Complies with IS-101 # DTMF '#' received. Complies with IS-101 * DTMF '*' received. Complies with IS-101 c T.30 Facsimile Calling Tone. Complies with IS-101 e Data Calling tone. Complies with IS-101 s "Presumed Hangup"(Silence) Time-out. Silence detected. The DCE has determined that there was no voice energy present at the the beginning of the voice recording session followed by a period of silence greater than the amount of time selected by AT+VSD command. Complies with IS-101 q "Presumed End of Message" (Quiet) Time-out. Quiet detected. The DCE has determined that there was voice energy present at the the beginning of the voice recording session followed by a period of silence greater than the amount of time selected by AT+VSD command. Complies with IS-101 b Busy tone. Complies with IS-101 d Dialtone tone. Complies with IS-101.
DTE to DCE stream. The DCE will filter the data stream from the DTE and remove all character pairs beginning with <DLE>. The DCE will recognize <DLE><DLE> and reinsert a single <DLE> in its place. The DTE must filter stream data to the DCE, and insert extra <DLE> characters ahead of <DLE> data.
 Examples of voice mode operation.
 Examples of voice mode operation.
 ZyXEL Advanced Voice Capability.
 ZyXEL Advanced Voice Capability.