Difference between revisions of "M4 RPID/PAI"
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RPID headers: Remote-Party-Id | RPID headers defined in https://tools.ietf.org/id/draft-ietf-sip-privacy-04.txt: | ||
Remote-Party-Id | |||
RPID-Privacy | |||
OP and TP have separate options: Forward RPID and | PID headers defined in https://datatracker.ietf.org/doc/html/rfc3325: | ||
P-Asserted-Identity | |||
Privacy | |||
<br><br> | |||
== Forward RPID / Forward PAI == | |||
OP and TP have separate options: '''Forward RPID''' and '''Forward PAI''' in their settings. | |||
The logic to pass these headers are in this order: | The logic to pass these headers are in this order: | ||
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In other words - OP makes a call that can pass over some TPs. If OP denies RPID/PAI forward, there is no difference what RPID/PAI settings are on any of the TPs for this call - these headers are already dropped by OP. | In other words - OP makes a call that can pass over some TPs. If OP denies RPID/PAI forward, there is no difference what RPID/PAI settings are on any of the TPs for this call - these headers are already dropped by OP. | ||
Only when OP allows RPID/PAI header forward, then separate TPs RPID/PAI settings can have an impact on the result. | Only when OP allows RPID/PAI header forward, then separate TPs RPID/PAI settings can have an impact on the result. | ||
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Same logic applies to the PAI settings. | Same logic applies to the PAI settings. | ||
<br><br> | |||
== Change RPID/PAI Host == | |||
'''Change RPID/PAI Host''' option in the OP settings changes the IP address in the RPID/PAI headers to the Proxy server's IP address. | |||
=== Example === | |||
Incoming headers: | |||
Remote-Party-ID: <sip:390458446594@201.105.251.49>;privacy=off;screen=yes | |||
P-Asserted-Identity: <sip:390458446594@201.105.251.49;user=phone> | |||
are changed to: | |||
Remote-Party-ID: <sip:390458446594@116.203.110.224>;privacy=off;screen=yes | |||
P-Asserted-Identity: <sip:390458446594@116.203.110.224;user=phone> | |||
Where 116.203.110.224 is the Proxy server's IP. | |||
NOTE: if the host in the RPID/PAI header comes as a hostname, e.g some.server.com, then it will not be overwritten with the IP address. | |||
==Advanced modifications== | |||
Advanced modifications to RPID/PAI headers can be done using [[M4 Transformations | Transformations]]. | |||
Latest revision as of 17:40, 11 October 2021
RPID headers defined in https://tools.ietf.org/id/draft-ietf-sip-privacy-04.txt:
Remote-Party-Id RPID-Privacy
PID headers defined in https://datatracker.ietf.org/doc/html/rfc3325:
P-Asserted-Identity Privacy
Forward RPID / Forward PAI
OP and TP have separate options: Forward RPID and Forward PAI in their settings.
The logic to pass these headers are in this order:
OP->TP
OP Forward RPID/PAI options tell if it is allowed to pass/forward RPID/PAI headers from OP to TPs.
If headers are passed from OP to TPs, then TP Forward RPID/PAI options tell if these headers should be passed to the TP.
If OP denies RPID/PAI header forward, then RPID/PAI headers coming from this OP will be dropped and TPs will not have any RPID/PAI headers to be forwarded.
In other words - OP makes a call that can pass over some TPs. If OP denies RPID/PAI forward, there is no difference what RPID/PAI settings are on any of the TPs for this call - these headers are already dropped by OP. Only when OP allows RPID/PAI header forward, then separate TPs RPID/PAI settings can have an impact on the result.
| OP setting | TP setting | Result |
|---|---|---|
| Forward RPID: yes | Forward RPID: yes | RPID headers are forwarded to TP |
| Forward RPID: yes | Forward RPID: no | RPID headers are NOT forwarded to TP |
| Forward RPID: no | Forward RPID: yes/no | RPID headers are NOT forwarded to TP |
Same logic applies to the PAI settings.
Change RPID/PAI Host
Change RPID/PAI Host option in the OP settings changes the IP address in the RPID/PAI headers to the Proxy server's IP address.
Example
Incoming headers:
Remote-Party-ID: <sip:390458446594@201.105.251.49>;privacy=off;screen=yes P-Asserted-Identity: <sip:390458446594@201.105.251.49;user=phone>
are changed to:
Remote-Party-ID: <sip:390458446594@116.203.110.224>;privacy=off;screen=yes P-Asserted-Identity: <sip:390458446594@116.203.110.224;user=phone>
Where 116.203.110.224 is the Proxy server's IP.
NOTE: if the host in the RPID/PAI header comes as a hostname, e.g some.server.com, then it will not be overwritten with the IP address.
Advanced modifications
Advanced modifications to RPID/PAI headers can be done using Transformations.
