[asterisk-users] Get a SHAKEN Identity Token

[Markus]

Am 07.01.2021 um 23:49 schrieb Alexander Perkins:
> Hi All.  We have old Asterisk servers, 1,89, (we cannot upgrade because 
> of several reasons) and we are now implementing SHAKEN via our 
> provider.  We place a SIP call to our provider and they return a 302 
> (information below).  I am trying to get the X-Identity information 
> below, but I do not seem to be able to do so.  Can somebody help me with 
> this?  Any suggestions on how to get it?

I use SIP_HEADER to extract information from inbound SIP packets and 
SIPAddHeader to copy that info to the outgoing call leg. Maybe this 
helps you?

Example:

exten => _+X.,1,NoOp(${CALLERID(num)})
exten => _+X.,n,Set(PAI=${SIP_HEADER(P-Asserted-Identity)})
exten => _+X.,n,Set(PAI=${CUT(PAI,:,2)})
exten => _+X.,n,Set(PAI=${CUT(PAI,@,1)})
exten => _+X.,n,GotoIf($["${CALLERID(num)}" = "anonymous"]?anonymous:cli)
exten => _+X.,n(anonymous),SIPAddHeader(P-Asserted-Identity: "${PAI}" 
<sip:${PAI}@1.2.3.4>)
exten => _+X.,n,SIPAddHeader(Privacy: user\;id)
exten => _+X.,n,Goto(dial)
exten => _+X.,n(cli),SIPAddHeader(P-Asserted-Identity: "${PAI}" 
<sip:${PAI}@1.2.3.4>)
exten => _+X.,n,SIPAddHeader(Privacy: id)
exten => _+X.,n,Goto(dial)