WB AMR in NSN

[Rifa]

Hi Guru's,
What are the supported WB-AMR codecs in NSN RNC?
I understand we are only capable to equip WB-AMR 12.65. Do we allow support for other higher codec as below specified by 3GPP.
Do we know what kind of call type requires higher codec like WB-AMR15.85 & 23.85?
I understand from a E// document that this codec would be used for multi-party conferencing. Is that true?
If we dont define, example 15.85 codec how the call could continue. Is it core network that manage this?

Thank you

Codec mode	Source codec bit-rate
AMR-WB_23.85	23.85 kbit/s
AMR-WB_23.05	23.05 kbit/s
AMR-WB_19.85	19.85 kbit/s
AMR-WB_18.25	18.25 kbit/s
AMR-WB_15.85	15.85 kbit/s
AMR-WB_14.25	14.25 kbit/s
AMR-WB_12.65	12.65 kbit/s
AMR-WB_8.85	8.85 kbit/s
AMR-WB_6.60	6.60 kbit/s
AMR-WB_SID	1.75 kbit/s *