[SR-Users] How to make a distinction between sip and tel uri

[Duarte Rocha]

Greetings,

I have a client that sends me two P-Asserted-Identity headers, one with SIP
URI and one with tel URI.

The pseudo variable $ai returns the topmost P-Asserted-Identity header and
I only need the one with the SIP URI.

How should i proceed ? Is there a way to delete the one with tel URI? the
header removal functions i find only work with header name.

I could also work with something different than $ai for this scenario.

Best Regards,
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