I wonder if gstreamer is used at all for circuit-switched voice. Most of the codecs in gstcodecs.conf can't be used for normal voice calls anyway. OTOH, the N9 doesn't support GSM 06.10 encoded media files (ticket), but this codec must be supported for voice calls, I guess. So I believe gstreamer is of no concern for voice calls. But that's just really me guessing here...

However, the N9 should support AMR-WB for playback of audio/video files. It says so in the spec sheet. If not, it would be a true bug.

Let's hope the ticket doesn't get the silent treatment. Even if my current network refuses to support AMR-WB (probably because they've advertised the iPhone a lot, which doesn't support AMR-WB) I'm not too happy that a high-end mobile like the N9 has sub-par quality even compared to older and mid-range Symbians and WP.