[Sipping] new draft version to extend Referred-By

[Salvatore Loreto <salvatore.loreto at ericsson.com>]

Hi there,

I have just submitted a new version of the draft
http://www.ietf.org/internet-drafts/draft-loreto-sipping-3892bis-01.txt

it explains the needs for the
Referred-By header to be extended to  to support more than one value:

In fact as explained in the draft the Referred-by header is normally set 
to the value contained
in the P-Asserted-Identity header field  to convey to the receiver the 
identity of the original
inviting sender.
However the P-Asserted header field currently allows two URI  values and
may be expanded in the future to carry more than two values as described 
in :
http://tools.ietf.org/id/draft-ietf-sipping-update-pai-09.txt

cheers
Sal