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MT5656ZDX-V and DTMF support?

Asked By Chu Bun
02-Feb-10 01:05 PM
The project is a proof of concept, so I cannot get the fund for a real
voice board. Does anybody knows if the Multimodem MT5656ZDX-V support
DTMF detection?  The specs seems to indicate it does, but I just want to
be sure.  Our program just needs to pickup and incoming call, collect a
series of key presses from the caller, then optionally read them back.
Thanks.
Link to the modem:
http://www.multitech.com/en_US/PRODUCTS/Families/MultiModemZDX/

Hello Chu, yes that modem handles DTMF just fine.

ExceleTel Fred replied to Chu Bun
02-Feb-10 04:57 PM
Hello Chu, yes that modem handles DTMF just fine.  Like all modems, it has a
set of standard issues, such as not detecting voice connect.  You can see an
entire list of modem issues in our white paper about TAPI and voice modems:

http://www.exceletel.com/support/hardware/VoiceModems/index.htm

There you will even see a picture of your modem ;)  We worked  with
Multi-Tech on their INF file.  If you have problems, let me know.  It is one
of the best voice modems to use with TAPI, but as you already noted,
something like the Hi-Phone or a SIP TSP and "localhost" on your machine
would be better because no modem yes has its own TSP, they use the windows
UnimodemV.

We are a TAPI tools manufacturer (TeleTools) so as you can imagine, I have a
ton of hardware to play with, but for prototyping, nothing beats the SIP
solution or a Hi-PHone.  With SIP, you can then even expand and get a bunch
of VoIP lines and test in the real world.  So you can test either by dialing
your localhost and a softphone, or with actual VoIP lines when you are ready
to add lines that you actually have to pay for :)

Fred

ExceleTel Fred wrote:Thank you for replying.

Chu Bun replied to ExceleTel Fred
02-Feb-10 06:07 PM
Thank you for replying.  I actually got the modem model name from your
web site (Google for "modem support DTMF detection").  I have checked
other recommended hardware, and it is the cheapest one for testing.

ExceleTel Fred wrote:...

Chu Bun replied to ExceleTel Fred
16-Feb-10 07:44 PM
...

Fred,

If you are around, please let me know if you have an update for the INF
file for this modem.  The wave out does not work and outputs this line to
the log:
Received DLE Raw=117, Meaning is Unknown.
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