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ZyXEL modem FAQ List v4.2, Nov 20 1995, Part 3 of 5 [Technical FAQs]
Section - T.24A Can DTMF tones be recognized at any time during recording/ playback?

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Top Document: ZyXEL modem FAQ List v4.2, Nov 20 1995, Part 3 of 5 [Technical FAQs]
Previous Document: T.23 Can speech be digitized/recorded and played back simultaneously?
Next Document: T.24B Why is there a noise before a voice file is played through telco line ?
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Kolja Waschk (kawk@Yo.COM) writes:
"Yes. Detection of DTMF tones and calling tones was poor with earlier firmware
versions, but became quite satisfying with firmware 6.11. Modems equipped
with firmware versions below 6.10 have been able to detect DTMF tones _only_ 
while recording/replaying voice; newer firmware allows detection of DTMF and
calling tones also while in command mode."

Brent Mosbrook (brentm@zyxel.com) [ZyXEL USA] adds:
"6.10a added the S39.6 register, which allows DTMF detection all the time."

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