asterisk users - Jun 2023 - Asterisk not replacing private FROM ip with public IP in INVITE

I've split this thread off from another (PJSIP authentication) because I
think the root cause is something different.    I think the problem is the
following FROM line in my SIP INVITE transaction:

From: "MYNAME" <sip:16667778888 at
172.31.253.4>;tag=773a3e6a-a677-4fb1-95fc-54b379b650a4

The IP address above is an internal/non-routable IP, so Twilio is rejecting it. 
For some reason Asterisk is not replacing the private IP with my public IP
address.  My pjsip.transport.conf contains a stanza for this transport with:

local_net=172.31.0.0/16

Is that all that's needed for Asterisk to replace the from IP with the
external IP?  I'm not clear on why Asterisk is not substituting the private
FROM ip with a public one...

type=endpoint
rewrite_contact=yes
force_rport=yes
rtp_symmetric=yes


On 6/21/23 14:36, TTT wrote:
> I've split this thread off from another (PJSIP authentication) because
I think the root cause is something different.    I think the problem is the
following FROM line in my SIP INVITE transaction:
> 
> From: "MYNAME" <sip:16667778888 at
172.31.253.4>;tag=773a3e6a-a677-4fb1-95fc-54b379b650a4
> 
> The IP address above is an internal/non-routable IP, so Twilio is rejecting
it.  For some reason Asterisk is not replacing the private IP with my public IP
address.  My pjsip.transport.conf contains a stanza for this transport with:
> 
> local_net=172.31.0.0/16
> 
> Is that all that's needed for Asterisk to replace the from IP with the
external IP?  I'm not clear on why Asterisk is not substituting the private
FROM ip with a public one...
> 
> 
> 
-- 
http://help.nyigc.net/

You need to put your external IP in the transport configuration:

external_media_address=X.X.X.X
external_signaling_address=X.X.X.X
external_signaling_port=5060


On 21/06/23 12:36, TTT wrote:
> I've split this thread off from another (PJSIP authentication) because
I think the root cause is something different.    I think the problem is the
following FROM line in my SIP INVITE transaction:
>
> From: "MYNAME" <sip:16667778888 at
172.31.253.4>;tag=773a3e6a-a677-4fb1-95fc-54b379b650a4
>
> The IP address above is an internal/non-routable IP, so Twilio is rejecting
it.  For some reason Asterisk is not replacing the private IP with my public IP
address.  My pjsip.transport.conf contains a stanza for this transport with:
>
> local_net=172.31.0.0/16
>
> Is that all that's needed for Asterisk to replace the from IP with the
external IP?  I'm not clear on why Asterisk is not substituting the private
FROM ip with a public one...
>
>
>
-- 
Telecomunicaciones Abiertas de México S.A. de C.V.
Carlos Chávez
+52 (55)8116-9161