HD calling to Three number only works one way

[whiskerp]

Hi, I am testing calls between EE and a new Three number. I can call from Three to other providers including EE and the call is in HD (AMR-WB).

I can call from Vodafone to the Three number and it is also in HD (AMR-WB) however when I call from the EE number to the Three number the call reverts to non-HD. All my other calls from my EE phone to UK numbers are either HD (AMR-WB) or if EE->EE then in HD+ (EVS).

So why in EE -> Three reverting to  non-HD (AMR-NB 8k) ???

[bristolian]

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@354- wrote:

With 3G signal decommed in my local area; the voice calls outgoing from EE to Three still don't seem to be HD. 🤖

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EE's 3G RAN has now been decommissioned nationally, but there's no effect on the core routing of calls. IMS-based calls still get either WB-AMR (HD) or EVS (HD+) codecs, but users that would have been using 3G will now be using 2G for all calls, which uses NB codecs.

[354-]

@bristolian - thanks for sharing that information, very technical! Beyond what I know about mobile telecoms.

Who do we poke to get this looked into? EE or Three? In your opinion?

[354-]

@Christopher_G - Any news on this, was there ever a reply?

[354-]

@whiskerp - Did you ever get the HD calling to work between EE and Three?

[whiskerp]

No and I don't have a Three SIM to test it with now.

[354-]

@whiskerp - Thanks for the update!

[bristolian]

Voice calls from EE > 3 should now be in WB-AMR aka HD.