We have configured a trunk with a provider using CUBE.
The provider wants early offer and G729r8
So we configured a SIP trunk with a device pool/region so that only g729 is allowed between SIP trunk and the rest.
We have configured an IOS MTP resource, and this is registered on callmanager:
dspfarm profile 2 mtp
maximum sessions software 20
associate application SCCP
The mtp resource is assign to the trunk using MR-list and MR-group
The trunk has MTP enabled with "MTP prefered Codec" G729b/G729ab
On CUBE we enable "deb ccsip mess" and we see the invite comming from callmanager, but without attached SDP
What must be done to make callmanager use early-offer?
Thanks for the help,