User's Guide for ZyXEL Omni 56K USB Modem

5-21

+VTD Set default
duration of
DTMF tone
1 to 255 100 Unit: 0.01 second.
+VIT Inactivity
timer 0 to 255 70 Unit: 0.1 second.
5.2.5 Voice Shielded DTE Commands

Table 22. Voice Shielded DTE Commands

COMMAND DESCRIPTION
<DLE>p Pause: suspend voice data to the output device in playback
state.
<DLE>r Resume: resume suspended voice data in playback state.
<DLE><ETX> Terminate voice playback state: switch to online voice
command mode after completing remaining data in buffer.
5.2.6 Voice Shielded DTE Responses

Table 23. Voice Shielded DTE Responses

RESPONSE CODE DESCRIPTION
<DLE>0 – <DLE>9
<DLE>*, <DLE>#
<DLE>A – <DLE>D
DTMF digit detected
<DLE>a Answer Tone detected
<DLE>b Busy detected
<DLE>c Calling Tone detected
<DLE>d Dial Tone detected
<DLE>e European Data Modem Calling Tone detected
<DLE>f Bell Answer Tone detected
<DLE>h The local handset on-hook
<DLE>q Quiet detected
<DLE>s Silence detected
<DLE>H The local handset on-hook
<DLE>u Transmission Under run in playback state
<DLE><ETX> End of stream