P-Asserted-Identity: "+442XXXXXXXXX"<sip:anonymous>

Oliver Mainprize

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Hi all,


I’m trying to identify the cause of an issue with my outgoing SIP messages, where the following header is being inserted:


P-Asserted-Identity: "+442XXXXXXXXX" sip:anonymous


I need to either modify or completely remove the sip:anonymous portion, but I haven’t been able to determine where this host part of the P-Asserted-Identity is being generated. I’ve narrowed the problem down to a P-Asserted-Identity host part configuration issue, but I cannot find any relevant settings in my current configuration.


For reference, the P-Asserted-Identity header needs to follow one of the formats below:


From: sip:+yournumber@yourIP/Domain
From: "sometext" sip:+yournumber@yourIP/Domain


I’m able to edit the number portion of the P-Asserted-Identity without any problem — it’s specifically the host part that I’m struggling with.


Has anyone encountered this issue before? Where is the P-Asserted-Identity host portion typically configured, and what might cause it to default to sip:anonymous?


Any guidance or insight would be greatly appreciated.
 
Last edited:
Which SIP provider are you using, and if a supported one, is the 3CX template being used?
 
Has anyone encountered this issue before? Where is the P-Asserted-Identity host portion typically configured, and what might cause it to default to sip:anonymous?
The cause of your issue is that you configured the "P-Asserted Identity : Display Name" option in your trunk configuration without your template actually having a P-Asserted Identity header. So you basically configured half the header
1764062551713.png

You need to either set it back to Default so the entire header will disappear or export your trunk configuration, configure the entire header correctly and then import it back in .
The options are there so a display name can be configured in those fields if the headers are actually part of the template.
 

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