[SIPForum-discussion] SIP "From" header field question

[Prassana Venu]

it should be the outbound proxy.

there is no difference in from header for other methods

On 12/17/05, mtsai at sunrisetelecom.com <mtsai at sunrisetelecom.com> wrote:
>
> Hi,
>
> RFC3261 says the "From" header field can be the format of "
> sip:user at hostname", where hostname can be a domain name or an IP address:
>
> 1. Should it be the IP address of the local UA, or the registrar, or the
> outbound proxy? Is there any specification describing this? RFC3261does not
> seem to clarify this.
> 2. Is there any difference for the "From" among different SIP
> messages(INVITE, REGISTER, and others)?
>
> Thanks in advance!
>
>
> Matt
>
>
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