tree 5eb26225dc521dc7d3ae5e885bfc0354b373ab80
parent 6225b5cecba79187e2f0b9dbd55a634ed9864b6b
author Pau Espin Pedrol <pespin@sysmocom.de> 1695824510 +0200
committer Pau Espin Pedrol <pespin@sysmocom.de> 1695824758 +0200

mgw: Configure IuUP if codec set during MDCX

The mgcp client may first configure the connection to use RTP-AMR, but
after setting up another call leg may find out that both legs are IuUP
and hence want to forward the IuUP between the 2 connections instead.
In that case, an MDCX with codec VND.3GPP.IUFP would be set.

Until now, osmo-mgw didn't take that scenario into account, and it was
only upgrading the rtp conn to iuup internally during CRCX.
As a result, in the mentioned scenario osmo-mgw would continue to
output RTP instead of IuUP after the MDCX with VND.3GPP.IUFP, which is
wrong.

Related: SYS#6578
Change-Id: Ic94bf90f54d8ba3e65a2cd52734867847f3a60c2