[SR-Users] subst_hf to rewrite a contact header

[Alex Balashov]

On Mon, Sep 24, 2018 at 06:27:51PM +0100, Ben Hood wrote:

> Contact: <sip:2018092417381900003 at 81.x.x <sip:2018092417381900003 at 81.x.x>.x>

Is this literally your Contact header? If so, it is definitely not
grammatically valid, and you are entirely right to assume that the
end-to-end ACK, along with any other in-dialog messages, will not be
routed from the caller correctly.

-- 
Alex Balashov | Principal | Evariste Systems LLC

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