Just wondering if any progress has been made on this issue as I have a similar problem with my operator's voicemail system.

I'm asked to type 1 or 2 depending on what I want to do, so I do so and hear the tone in the speaker, but the voicemail system doesn't "hear" them and eventually disconnects me. Result: it is impossible for me to listen to voicemail messages unless I dial in from another phone (and pay through the nose for the privilege).