Hello,

if you define an onreply_route[x] to be executed for that invite transaction, you can execute 'drop' instead of 'exit' and the reply is not forwarded.

What is tricky is 'relay only last provisional' -- here you should define the rules specific for the device/your environment and decide when you need to drop or not -- message flags or htable can be options to save some states to track whether to drop or not.

Cheers,
Daniel

On 13.07.18 18:12, yu@yu-boot.ru wrote:

Hello.

My uplink usually gives ringback as both 183 Progress with SDP and 180 Ringing also with (different) SDP. One of my clients can't handle that behavior and it just don't plays ringback at all. Is it possible to relay only last provisional response with SDP and drop anything else 183? Any ideas plz? Can't figure out even a logic itself.

Thanks.

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