Try

exclude_hf_value("Allow", "REFER");

in your initial INVITE to Teams resp. your reply on initial INVITE from Teams.

https://www.kamailio.org/docs/modules/devel/modules/textopsx.html#textopsx.f.exclude_hf_value

On Thu, Nov 26, 2020, 13:54 me.projects@yahoo.com <me.projects@yahoo.com> wrote:

Hi,

I want to remove some "Allow" features from my Kamailio SBC like I want to keep following only

Allow: OPTIONS, NOTIFY, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REGISTER,

How can I achieve that?

Thanks,
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