Re: VisualBc and Tapi 3.0
- From: "Andreas Marschall [MVP TAPI]" <Andreas.Marschall@xxxxxxxxxx>
- Date: Sun, 15 May 2005 19:17:04 +0200
"Vuong" <Vuong@xxxxxxxxxxxxxxxxxxxxxxxxx> schrieb im Newsbeitrag
news:0876F892-3E17-405F-A1F7-4DF1890C0866@xxxxxxxxxxxxxxxx
> I'm really don't know exactly the meaning of unimodem/tsp and h323/tsp.
> For me. unimodem/tsp is : to make a call to phone call.
> and h323/tsp is : to make a call from pc to pc through network tcp/ip
> If my understand is right, so I try to make call both of ways . However
> like i said, i can make call success but can't talk or hear anything. (I
> downloaded platform sdk, directx . I'm using visual basic 6.0 . and the
> examples is outgoing and incoming of platform sdk). Does i miss something to
> make it work well ????
Vuong,
if you are using a modem to make a call then you are most probably using
UniModem.TSP
If you are using IP Telephony then you are most probably using H323.TSP
Modems driven by UniModem.TSP can only work half-duplex, so you can either
hear/record _or_ speak/play at the same time. No work around for modems
available.
Please search this newsgroup for "duplex".
Your only option is to use other telephone hardware, e.g. see:
http://www.terasens.com/products/teravoice/hardware.aspx
When using H323 you may firewall issues.
Are there any firewalls active between the two PCs?
--
Best Regards
Andreas Marschall
Microsoft MVP for TAPI / Windows SDK
TAPI / TSP Developer and Tester
http://www.I-B-A-M.de/Andreas_Marschall's_TAPI_and_TSPI_FAQ.htm
* Please post all messages and replies to the newsgroup so all may
* benefit from the discussion. Private mail is usually not replied to.
* This posting is provided "AS IS" with no warranties, and confers no rights.
>
> "Andreas Marschall [MVP TAPI]" wrote:
>
> > "Vuong" <Vuong@xxxxxxxxxxxxxxxxxxxxxxxxx> schrieb im Newsbeitrag
> > news:D34327A3-A99D-412E-A383-FD4C6EE08DD0@xxxxxxxxxxxxxxxx
> > > I'm compiling incoming and outgoing example (Visual Basic 6.0) and run.
> > > When The call is made. I and my friend can't talk to each other.
> > > Despite of call_state . Everything fine.
> > > Why ???. anyone try this
> >
> > Vuong,
> > what device / TSP are you using? UniModem.TSP or H323.TSP?
> >
> > --
> > Best Regards
> > Andreas Marschall
> > Microsoft MVP for TAPI / Windows SDK
> > TAPI / TSP Developer and Tester
> > http://www.I-B-A-M.de/Andreas_Marschall's_TAPI_and_TSPI_FAQ.htm
> > * Please post all messages and replies to the newsgroup so all may
> > * benefit from the discussion. Private mail is usually not replied to.
> > * This posting is provided "AS IS" with no warranties, and confers no
rights.
> >
> >
> >
.
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