Android Linphone and Voicemail


I’ve been using my Android phone with Linphone to make and receive calls via my Asterisk PBX version:
Asterisk 18.4.0 built by mockbuild @ on a x86_64 running Linux on 2022-06-27 10:23:26 UTC

I’m hoping I can start using Linphone more but noticed DTMF doesn’t seem to work.

When I dial in to Asterisk voicemail and am prompted for my extension, I enter the extension but hear no DTMF and Asterisk times out.

I then tried calling a (random) customer support phone number to “press a number” and that didn’t work.

I’ve tried searching here and elsewhere but haven’t come across anything that seems directly related (or that I recognized, anyway).

Can someone help me with a few next-steps?

Thank you very much!

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