P-Asserted-ID and Diversion Header

General Help
1

dear community,

i have a general problem:
my provider (ip based auth) needs, that in each call a correct P-Asserted-ID is set.
P-Asserted-ID Format should be +49XXXXXXXXXXXXXX.

The Diversion Header (if a call will be forwarded) should too +49XXXXXXXXXXX.

But if i activate the call forwarding directly on my snom phone,
in the diversion header i see diversion:20.

but it should be +49MAINNUMBER20

and the P-Asserted-ID must ever be +49MAINNUMBER.

can anybody helps me, how i can set this correctly, so that i dont have any problems (on call forwarding directly on phone (with lines 1 2)?

my provider means i should set sendrpid to pai, or = yes, but is this possible in version 11 from asterisk?

how i can change the diversion header format that if the diversion is set to e.g. 20, i
auto rewrite this header to +49MAINNUMBER?

Thank you very much and many greets

2

Hello @iceget,

You can activate a diversion header generation in the advanced settings tab:

image.png1777×52 3.36 KB

Also, make sure that your extensions are set to sendrpid=pai and set trustrpid=yes.
Do not use the Snom phones to forward the calls. It is better to use the Freepbx dialplan to do it (Followme module).

Thank you,

Daniel Friedman
Trixton LTD.

3

hello daniel,

thank you very much!

but i also had a 2nd question:
if i will hide the caller id for each needed extension i must set “from” header to anonymous,
but the p assert id must have the original phone number to hide the caller id.

maybe any idea how i can fix that? my goal: if i call *670049123456789 my caller id should be hidden on called number.

thank you very much

4

Hello @iceget,

Put this macro in the extensions_custom.conf file (change your main number and your asterisk ip address):

[macro-dialout-trunk-predial-hook]
exten => s,1,GotoIf($[ "${CALLERID(name)}" = "anonymous" ] ]?pai-custom:continue)
exten => s,n(pai-custom),SipAddHeader(P-Asserted-Identity: "+49MAINNUMBER20" <sip:+49MAINNUMBER20@YOUR_ASTERISK_IP_ADDRESS\;user=phone>)
exten => s,n,SipAddHeader(Privacy: id)
exten => s,n,Progress()
exten => s,n,MacroExit()
exten => s,n(continue),MacroExit()

Then add an outbound route with a prefix of *67 to it with a caller id override of anonymous and place it at the top of your outbound rules.

image.png692×242 12.8 KB

image.png1752×389 17.7 KB

Thank you,

Daniel Friedman
Trixton LTD.

5

Hi:

I have added this macro to extensions_custom.conf as you do and create the outbound route:

image
image700×236 18.6 KB

But when I check the INVITE message request sent by my server is not addinf the “P-Asserted-Identity” field on the header… Any Idea what can be that? Im using FreePBX 15.0.5.5 and Asterisk 16.2.0

Waiting on your help.

Daniel G

6

Is the P-Asserted-Identity header incorrect when placing a regular call or when trying to place a call using *67, or both?

7

Hi Robert:

Thank you for expend time on my question. The issue was when using the *67… but I already fix it… I went to the debug and check that when Asterisk was looking for the field ${CALLERID(name)} it was not “Annonimous”, but “Hidden” and that’s why was not adding the P-Asserted-Identity on the header.

Thank you for your support.

Daniel G