Replace domain in TO invite message

[Robert Craig]

I am experimenting with dialing directly to our Oracle SBC's (instead of tandeming through another product that does translations for us). However, our Verizon SIP service requires the INVITE to have a specific domain in the INVITE message. Right now the invite from CUCM just has 5551112222@1.1.1.1. Verizon wants to see 5551112222@verizondomain.com. Does anyone have a LUA scrip that can accomplish this? I've seen a lot of scripts out there, but nothing that changes the INVITE domain. Thanks for any tips.

Robert

[Mark Stover]

Hi Robert,

Are you saying you want to change the request URI or the To: header?

Mark

[Robert Craig]

I guess it would be the request URI. The first first line in the invite.

2017-07-10 09:53:30.344

INVITE sip:5551112233@1.1.1.1;user=phone SIP/2.0

Robert

[Mark Stover]

Hi Robert,

I thought that might be the case. You have to use the getRequestLine() and setRequestUri() functions to change that. Have a look at the below, it should get you started. You could also input the domain through a Normalization Script parameter, so you don't have to edit the script to change the domain.

Mark

local method, ruri, ver = msg:getRequestLine()

local nuri = sipUtils.parseUri(ruri)

if nuri

then

    local nUser = nuri:getUser()

    local nHost = nuri:getHost()

    local newHost = "domain.com"

    --create new Request URI

    newRuri = string.format("sip:%s@%s", nUser, newHost)

    msg:setRequestUri(newRuri)

end

[Robert Craig]

Great. I'll give this a shot. Thank you very much!

Robert