Responses inline.
-----Original Message-----
From: Bharatram Setti [mailto:[EMAIL PROTECTED]]
Sent: Monday, August 20, 2001 5:56 PM
To: SIP Implementors
Subject: [Sip-implementors] REGISTER questions.
>Hi,
>
> I have a few questions on the usage of the REGISTER method:
>
>1. Suppose an outbound proxy is configured for a UA, is it correct to
>assume that the UA should register with the proxy to be able to originate
or
>receive calls?
As Paul has correctly answered, no.
>2. If the answer to the above question is yes, then in case the UA
does
>not have any contact address other than the address that it specifies in
the
>To Header field (registrand), then does the UA still need to add this
>address in the Contact header (RFCbis says: "... bind the address listed in
>the To field with a SIP server to one [underline is mine] or more URIs
>...")?
I don't really understand this question. In a REGISTER, the To field
contains my address that I will receive calls to for that proxy. The Contact
contains the address on my host. So, for example, when I register with
dynamicsoft.com, this might look like:
REGISTER sip:dynamicsoft.com SIP/2.0
From: sip:[EMAIL PROTECTED]
To: sip:[EMAIL PROTECTED]
Contact: sip:[EMAIL PROTECTED]
>3. If the answer to Q2 is no, then the statement "If the request does
>not contain a Contact header, the registration remains unchanged." does not
>make sense for first time registration of the UA.
If there are no registered Contacts, and a first register comes without a
Contact, it changes nothing, so that there remain no registered contacts.
-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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