4 Apr
2016
4 Apr
'16
11:16 a.m.
On 04 Apr 2016, at 10:02, Grant Bagdasarian
<gb(a)cm.nl> wrote:
Hi Daniel,
You mentioned below about this issue not being complaint with the RFC.
Our supplier is telling us this is normal behavior and that they went through the RFC and
found this was normal behavior.
If it’s not too much work, could you tell me in which part of the RFC this is described?
8.2.6.2 Headers and Tags
The From field of the response MUST equal the From header field of
the request. The Call-ID header field of the response MUST equal the
Call-ID header field of the request. The CSeq header field of the
response MUST equal the CSeq field of the request. The Via header
field values in the response MUST equal the Via header field values
in the request and MUST maintain the same ordering.
RFC 3261 basics. The UAS copies ALL Via:s from the request into the response. This is how
we route responses through
a SIP network, so without all headers, communication will likely be very broken.
/O