IMS tel uri Asterisk patch

Hello everyone, after some time i test an Asterisk configuration with Softswitch without registration. Everything was successful.

The thing now is that I need to test my Asterisk with a IMS (IP Multimedia Subsystem).

The IMS send and use Tel Uri format but the asterisk can not proccess the call (of course use sip uri)

Surfing the web I found a patch: … -fix.patch

If this is a correct solution, i need to apply this patch. Does anyone know how to patch?

Someone around have used this patch. Please help!

But if there is another solution thanks in advance!