Hi Mark,

Are you sending the DTMFs as RFC2833 or SIP-INFO (in Network settings)?

Maybe some networks only recognize one and not the other?

Cheers,

Sylvain Berfini
*Head of Mobile & Desktop Apps Department*

+33 (0)9 52 63 65 05
sylvain.berf...@belledonne-communications.com

Discover our solutions in 3 minutes! <https://player.vimeo.com/video/393868225?autoplay=1>

/Belledonne Communications, the company behind the Linphone project/
https://linphone.org

Le 05/06/2023 à 10:05, Mark Stanton a écrit :
Using Linphone on my desktop computer (mostly fantastic, thank you),
using the keypad for call-centre options almost entirely doesn't work.
This has been the case on two of my computers so I don't think they're
the cause.

The tones are produced but they aren't recognised.
I'm in the UK and using the PCMA (ITU-G.711 alaw) encoder, which seems
to be the only one suitable here.

The exception to the "almost" is British Telecom calls.  There the
tones are recognised... weird!

Is there a setting I should be changing or is this expected behaviour?

Regards
Mark

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