What codec is used for direct obi-to-obi calls?

[NHandSanDiegoObiUser]

What is the default codec that is used for direct obi-to-obi calls (**9)?  It doesn't appear that the ability to select the codec exists, as it does for regular SIP providers.

Also, are obi-to-obi calls proxied?  or, are they "direct media" ?

Thanks in advance.

[ianobi]

Voice Services -> OBiTALK Service -> CodecProfile is used to give priority to the OBiTALK codec. Priority 1 by default is G711u.

Also, are obi-to-obi calls proxied?  or, are they "direct media"?

As far as I know the OBiTALK protocols remain a mystery