Thanks for the fast answer and sorry fr directing my question to the wrong
group.
In analysing tables 3, 4 and 5 of RFC 2543 I encountered following
mismatches:
1) the "contact" header is mentioned twice in table 3, once as general
header and once as Request header.
2) the "organisation" header is mentioned as Request header in table 3, but
is marked as general header in table 4.
3) the "user agent" header is mentioned as Request header in table 3, but is
marked as general header in table 5.
4) the "retry-after" header is mentioned as Response header in table 3, but
is marked as possibly occuring in a REGISTER Request in table 5.
Analysis of the same tables in RFC2543bis_04 shows that these "errors" have
been corrected in the next version of SIP. However some other mismatches
occur:
1) the "expires" header is marked as general header in table 4, but listed
among the entity headers in table 3.
2) the "authorization" header can occur in responses as well as in Requests
according to table 4, but is listed as Request header in table 3.
3) the "Error-info" header is listed as response header in table 3, but
marked as Request header in table 4.
4) the "WWW-Authenticate" header is listed as response header in table 3,
but can occur in Requests as well as responses according to table 5.
Can these be clarified ?
kind regards
Jan Van Geel
Signalling Specialist
Belgacom ANS/NIS/NGN
Tel : 32 2 202 1035
Email : [EMAIL PROTECTED]
[EMAIL PROTECTED]
-----Original Message-----
From: Jonathan Rosenberg [mailto:[EMAIL PROTECTED]]
Sent: Wednesday 22 August 2001 07:36
To: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
Subject: RE: [Sip] SIP question: headers
Basic questions on SIP should be directed to
[EMAIL PROTECTED]
Responses inline.
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Monday, August 20, 2001 3:41 AM
> To: [EMAIL PROTECTED]
> Subject: [Sip] SIP question: headers
>
>
> Dear all,
>
> I'm new in the domain of VoIP and SIP, and while reading SIP
> (RFC 2543) and
> RFC2543bis-04 I encountered a problem with the contents of table 4.
>
> The problem is how to understand the table correctly.
> For example: The first line specifies that the "allow" header
> can occur in
> all Request messages except in the ACK, because the WHERE
> column indicates
> R, and in each column related to an individual Request the
> "o" indicates
> that it is optional, except for the ACK. The second line
> specifies that it
> can occur in response 415, but how should I interpret the "o"
> fields in the
> columns concerning the Request messages (INVITE? REGISTER, ...) ?
These are responses to those particular requests. So, an o in the INVITE
column means that the header is optional in responses to INVITE.
>
> A second problem, related to this is that headers, marked as
> response (e.g.
> warning) also have the "o" (optional) indication in all
> Requests. Does this
> mean that this respone header could also be present in a Request ?
This means they can appear in responses to all request methods.
I will clarify this.
Thanks,
Jonathan R.
---
Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Ave.
Chief Scientist First Floor
dynamicsoft East Hanover, NJ 07936
[EMAIL PROTECTED] FAX: (973) 952-5050
http://www.jdrosen.net PHONE: (973) 952-5000
http://www.dynamicsoft.com
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