SIP Normalization Script to modify FROM header

Hello. I'm looking to remove and replace the FROM header as the invite ingresses from Skype for Business into CUCM. Would the below script accomplish this? The invite currently just says "first.last@test.com:10.1.1.1". I'm looking to replace it with a phone number so its routable. Any help is appreciated.

Robert

M={}

function M.outbound_INVITE(msg)

    local from = msg:getHeader("FROM")  --Get FROM Header

    local b = string.gsub(from, "(<sip:.+@)", "<sip:5551112222")  --New FROM Header

    msg:modifyHeader("From", b)  --Replace FROM Header

end

return M

Hi Robert,

  Have moved your question under UC Manager SIP community. Please refer this url for related information

https://communities.cisco.com/thread/73584?start=0&tstart=0

Thanks and Regards,

Geevarghese

Hi Robert,

Since the SIP INVITE is being received by Unified CM from S4B, it is an "inbound_INVITE" from the perspective of SIP Normalization.

BTW, There's a couple other minor tweaks I would make to your above...

M={}

function M.outbound_INVITE(msg)

  local from = msg:getHeader("From")  --Get FROM Header

  local b = string.gsub(from, "<sip:.+@", "<sip:5551112222@")  --New FROM Header

  msg:modifyHeader("From", b)  --Replace FROM Header

end

return M

I always use header names using a format of "From" rather than "FROM".

Since you aren't trying to 'capture' what you matched, the () in your match string aren't needed.

OK, thank you very much!

Robert