On 17 Jul, 13:05, Paul Hayes <nomailfo...@polog40.org.uk> wrote:
> Jono wrote:
> > Gordon Henderson explained on 15/07/2007 :
>
> >> You need both t and T in the Dial() command in the dialplan.
>
> >> I've no idea how you implement this in Trixbox though.
>
> >> Gordon
>
> > Yes, thanks. I had considered that, however, any IVRs that require a #
> > to be dialled result in the transfer process commencing.
>
> > I wish the Siemens' R key worked.
>
> The Siemens "R" key does work, Asterisk doesn't know how to handle the
> flash-hook signal that the R key sends. The actual signal depends on
> your selected DTMF method, rfc2833 sends an RTP DTMF Event message with
> a value of 16. SIP Info sends a SIP INFO message with event value 16
> but you can change this in the Siemens config because there is currently
> no standardised way of sending a flash hook in SIP Info.
>
> --
> Working Email:
>
> paul-at-polog40-dot-org-dot-uk- Hide quoted text -
>
> - Show quoted text -

Now, this is interesting, 'cos from my (very limited) knowledge of
DTMF, I would have thought
that you could send a DTMF value of 12 (which is the #) when you press
R. so I programmed a
Seimens to try this: In the advanced telephony settings I changed the
value of "Application Signal" to 12.

Result:

Nope, the phone just makes a pathetic whining noise if you press the R
key in a SIP call, from
which I deduce that Seimens have actively disabled this key in some
way for VOIP calls.

Have to wait for the updated firmware :-(

Alister