How do modify the from header domain

Yeti-Switch
1

Hi team
How do modify the header domain ，

example：
From: “123456789” <sip:123456789@192.168.0.100
Modify
From: “123456789” <sip:123456789@192.168.1.111

2

Could you explain use case for this? Usually yeti inserts own IP as from domain.

3

If the domain 192.168.1.111 is a FIXED value, then in the Vendor Gateway’s Signalling Tab, in the Termination section → Term append headers req, you can input:

From: “fU” <sip:fU@192.168.1.111>\r\n

4

I deployed Yeti to the cloud and docked the SIP Trunk
SIP header “from” and “contact” sent to the line are both Intranet IP
I need to change the Intranet IP to the public IP
From: sip:012345678@192.168.0.100:5060 ---------From: sip:012345678@PublicIP:5060
Contact: sip:192.168.0.100:5060;transport=udp
Modify
Contact: sip:PublicIP:5060;transport=udp

5

it is bad idea to insert mandatory headers like From using Term append headers req feature

6

you have to use public-address sip interface parameter to define public address

7

Thank you for your reply
How does this parameter work?
I did not find information about.

8

Thank you for your advice
Hope to exchange and learn