topic Re: Replace domain in TO invite message in Call Control

Replace domain in TO invite message

Robert Craig — Fri, 07 Jul 2017 13:49:34 GMT

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

Re: Replace domain in TO invite message

Mark Stover — Mon, 10 Jul 2017 13:14:54 GMT

Hi Robert,

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

Mark

Re: Replace domain in TO invite message

Robert Craig — Mon, 10 Jul 2017 13:54:47 GMT

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

Re: Replace domain in TO invite message

Mark Stover — Mon, 10 Jul 2017 14:52:08 GMT

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

Re: Replace domain in TO invite message

Robert Craig — Mon, 10 Jul 2017 17:12:42 GMT

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

Robert