SIP Caller Name and Number Display

Last Updated : Sep 16, 2022 |

For incoming SIP calls, the caller name and number are obtained from the following headers:


Value	Description
Caller Name	Unless withheld (see notes below), the caller number for incoming calls is taken from `PAI` header if present, otherwise from the `From` header. The SIP line's advanced settings Caller ID FROM Header option can be used to force use of the `FROM` header only.
Caller Number	The caller name for incoming calls is taken from the name supplied with the following headers, in order of priority with highest first: `PPI` header `PAI` header `Remote Party ID` header `Contact` header

Notes

The above apply regardless of the header settings of the SIP URI handing the incoming call. For example, for incoming caller details, you do not need to have P Preferred ID selected and configured in the SIP URI or SIP line appearance. The PPI header info is used if present in the incoming request.
If the receiving IP Office system has Caller ID from From header enabled (disabled by default), then the From header name is used regardless of PAI or PPI headers.
If the header to be used for the caller’s name does not contain a name, “Unknown” is displayed.
Calls from a source that is anonymous display "Withheld" as the caller name and no number.

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