You can just modify the domain portion of the RURI, i.e. by manipulating $rd. For example, $rd = "some.ip"; Then, t_relay().

However, beware that sending the call back to the same gateway from which it came is likely to cause call loops. Proxies don't create new call legs, they are just part of the same logical call leg; call leg "A" comes in, and call leg "A" goes back out, with the same Call-ID, CSeq, etc. If you send the INVITE back to the same gateway that originated the request, it will likely reject it since it is literally the same request it itself created.

-- Alex

On Jul 6, 2023, at 11:02 AM, Ali Taher ataher@vanrise.com wrote:

Hi Henning,

I used the uac_replace_from() function to replace the fU, but the value is still the same when i printed it using xlog.

I also dont know how to send the invite back to the switch. What function to use?

Thanks,

Sent from my iPhone

...

On Jul 6, 2023, at 5:31 PM, Henning Westerholt hw@gilawa.com wrote:

Hello, Not 100% sure if I understood your question correctly. There are probably many ways. One option is to use the $RANDOM pseudo-variable that can generate (pseudo-)random numbers. You can get it to the pattern you like with some script operations in the cfg. Just rewrite the request URI user of the INVITE in Kamailio to the new generated number and send it out again. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com From: Ali Taher ataher@vanrise.com Sent: Donnerstag, 6. Juli 2023 15:15 To: sr-users@lists.kamailio.org Subject: [SR-Users] Randomize calling number Hello, What is the best way to change the calling number to a random number (based on specific pattern, like number of digits for example) in an invite packet without using a database. So the scenario is : • receive an invite packet from certain source • change the calling number • send back the invite packet including the new calling number to the original source. Regards, Ali Taher

---

Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave@lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Hello,

ah, you want to change the From URI user. Yes, uac_replace_from is a common approach for that.

This function will change the From URI when you send out the message, you will not see it with a xlog in the cfg. https://www.kamailio.org/wikidocs/tutorials/faq/main/#why-changes-made-to-he...

Regarding sending out the SIP message, a common approach is to use rewrite the request URI to the new destination and then use “t_relay” to send it.

Cheers,

Henning

-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/

From: Ali Taher ataher@vanrise.com Sent: Donnerstag, 6. Juli 2023 17:02 To: Henning Westerholt hw@gilawa.com Cc: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: Randomize calling number

Hi Henning,

I used the uac_replace_from() function to replace the fU, but the value is still the same when i printed it using xlog.

I also dont know how to send the invite back to the switch. What function to use?

Thanks,

Sent from my iPhone

On Jul 6, 2023, at 5:31 PM, Henning Westerholt <hw@gilawa.commailto:hw@gilawa.com> wrote:  Hello,

Not 100% sure if I understood your question correctly.

There are probably many ways. One option is to use the $RANDOM pseudo-variable that can generate (pseudo-)random numbers. You can get it to the pattern you like with some script operations in the cfg.

Just rewrite the request URI user of the INVITE in Kamailio to the new generated number and send it out again.

Cheers,

Henning

-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/

From: Ali Taher <ataher@vanrise.commailto:ataher@vanrise.com> Sent: Donnerstag, 6. Juli 2023 15:15 To: sr-users@lists.kamailio.orgmailto:sr-users@lists.kamailio.org Subject: [SR-Users] Randomize calling number

Hello,

What is the best way to change the calling number to a random number (based on specific pattern, like number of digits for example) in an invite packet without using a database.

So the scenario is :

1. receive an invite packet from certain source 2. change the calling number 3. send back the invite packet including the new calling number to the original source.

Regards, Ali Taher

Hello Ali,

you can just build the new From URI the way you like it, e.g.:

uac_replace_from("$var(from_user)", sip:$var(from_user)@$fd);

Cheers,

Henning

-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/

From: Ali Taher ataher@vanrise.com Sent: Donnerstag, 6. Juli 2023 18:12 To: Henning Westerholt hw@gilawa.com; Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: RE: Randomize calling number

Hi Henning,

Is there a way to change From URI user part without touching the domain ? As I can see in uac_replace_from there is an option to either change the display part or the whole URI part.

Regards,

From: Henning Westerholt <hw@gilawa.commailto:hw@gilawa.com> Sent: Thursday, July 6, 2023 6:42 PM To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.orgmailto:sr-users@lists.kamailio.org> Cc: Ali Taher <ataher@vanrise.commailto:ataher@vanrise.com> Subject: RE: Randomize calling number

Hello,

ah, you want to change the From URI user. Yes, uac_replace_from is a common approach for that.

This function will change the From URI when you send out the message, you will not see it with a xlog in the cfg. https://www.kamailio.org/wikidocs/tutorials/faq/main/#why-changes-made-to-he...

Regarding sending out the SIP message, a common approach is to use rewrite the request URI to the new destination and then use “t_relay” to send it.

Cheers,

Henning

-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/

From: Ali Taher <ataher@vanrise.commailto:ataher@vanrise.com> Sent: Donnerstag, 6. Juli 2023 17:02 To: Henning Westerholt <hw@gilawa.commailto:hw@gilawa.com> Cc: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.orgmailto:sr-users@lists.kamailio.org> Subject: Re: Randomize calling number

Hi Henning,

I used the uac_replace_from() function to replace the fU, but the value is still the same when i printed it using xlog.

I also dont know how to send the invite back to the switch. What function to use?

Thanks,

Sent from my iPhone

On Jul 6, 2023, at 5:31 PM, Henning Westerholt <hw@gilawa.commailto:hw@gilawa.com> wrote:  Hello,

Not 100% sure if I understood your question correctly.

There are probably many ways. One option is to use the $RANDOM pseudo-variable that can generate (pseudo-)random numbers. You can get it to the pattern you like with some script operations in the cfg.

Just rewrite the request URI user of the INVITE in Kamailio to the new generated number and send it out again.

Cheers,

Henning

-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/

From: Ali Taher <ataher@vanrise.commailto:ataher@vanrise.com> Sent: Donnerstag, 6. Juli 2023 15:15 To: sr-users@lists.kamailio.orgmailto:sr-users@lists.kamailio.org Subject: [SR-Users] Randomize calling number

Hello,

What is the best way to change the calling number to a random number (based on specific pattern, like number of digits for example) in an invite packet without using a database.

So the scenario is :

1. receive an invite packet from certain source 2. change the calling number 3. send back the invite packet including the new calling number to the original source.

Regards, Ali Taher