First off, NEVER, EVER, EVER cross-post questions to both the sip and
sip-implementors list. This defeats the purpose of having separate lists.
Responses below.
> -----Original Message-----
> From: Rakesh Jain [mailto:[EMAIL PROTECTED]]
> Sent: Monday, February 05, 2001 5:51 AM
> To: [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]
> Subject: [Sip-implementors] few questions...
>
>
>
> Hi,
>
> I am having few questions.....
> I am sorry if these questions have been asked already.
>
> 1. From rfc2543bis-02, section 4.2.3,
> "A server SHOULD return Allow, Accept, Accept-Encoding, Accept-
> Language and Supported header fields. The response MAY
> contain a
> message body indicating the capabilities of the end
> system(rather
> than properties of any existing call)."
>
> My question is, Is there any provision to request for
> particular
> field, like Allow or just message body, using OPTION request. I
> could not locate this type of features in rfc2543bis-02.
No. If you don't want the Accept-Language header from the response, just
ignore it.
>
> 2. Is there any example where message body will be used with BYE
> request/responce.
The only current usage I am aware of is SIP-T, which uses the body to carry
an ISUP MIME object, which is the ISUP release message.
>
> 3. From section
> " Not all of the SIP request or response can be
> encrypted end-to-
> end because header fields such as To and Via need to be
> visible to proxies so that the SIP request can be routed
> correctly"
>
> When, To field will be used by the proxy to route the request.
> What I understood from the RFC is that proxy will look Request-
> URI to route the request.
That is correct. However, To field is used for call leg identifications,
which a proxy needs to perform.
-Jonathan R.
---
Jonathan D. Rosenberg 72 Eagle Rock Ave.
Chief Scientist First Floor
dynamicsoft East Hanover, NJ 07936
[EMAIL PROTECTED] FAX: (973) 952-5050
http://www.cs.columbia.edu/~jdrosen PHONE: (973) 952-5000
http://www.dynamicsoft.com
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