Dial-In conference -SF4 2015 not working

Hello

We have configured Skype Server 2015 and integrated this with the Asterisk PBX.
while trying to add another member to the conference the call disconnect i get this in the logs - SIP/2.0 491 Invite with Replaces failed because Gateway side reinvite failed.

i tried to change reinvite to no and yes - without success
this is the PEER Details(outgoing) for the Skype trunk

host=192.168.22.X.X
fromdomain=192.168.X.X
type=friend
port=5068
dtmfmode=rfc2833
context=from-internal
qualify=yes
transport=tcp
canreinvite=no
disallow=none
insecure=port,invite
allow=all
nat=yes
directmedia=no
permit=0.0.0.0/0.0.0.0

please help.

The re-invite that failed wasn’t being done by Asterisk

I’m not convinced that the INVITE/Replaces came from Asterisk, either, as you don’t have promiscuous redirects enabled and you would need those and an incoming REFER to generate one.

I think you need to provide a lot more information on what is doing what here, preferably with SIP traces from all three parties (although we also need to know what the third party is).

thank you david for the quick response
i see that there is no settings for incoming on the Skype trunk
maybe its related to our issue ?