Hi Wayne,
the question remains how a phone would communicate to the proxy/registrar.
Of course it�s possible to set this up on the proxy/registrar with HTTP and
a web client, but is there a standardized way to do this?
For example:
Phone -> Proxy/Registrar
------------------------------------------------
PUBLISH sip:[EMAIL PROTECTED] SIP/2.0
From: <sip:[EMAIL PROTECTED]>;tag=123
To: <sip:[EMAIL PROTECTED]>
Call-ID: fhs4tcm0q3xt
CSeq: 1 PUBLISH
Content-Length: 564
Content-Type: application/redirection-setup
Event: registration-setup
Redirection-Event: not-registered
Redirection-Target: <sip:[EMAIL PROTECTED]>
Redirection-Timeout: 0
------------------------------------------------
or:
Proxy/Registrar to Phone (notifies about http possibility):
------------------------------------------------
SIP/2.0 200 You are registered
From: <sip:[EMAIL PROTECTED]>;tag=123
To: <sip:[EMAIL PROTECTED]>;tag=bhgz7
Call-ID: fhs4tcm0q3xt
CSeq: 1 REGISTER
Content-Length: 564
Content-Type: text/xml
<?xml version="1.0"?>
<web-access>
<event name="redirect" type="not-registered">
<URL method="POST">https://proxy.com:5068/set_redirection.php</URL>
<field name="origin">$from_url</field>
<field name="red_event">$redirection_event</field>
<field name="red_number">$redirection_number</field>
<event>
</web-access>
------------------------------------------------
Maybe the IM community knows more?
Christian
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, March 11, 2004 8:22 PM
To: Christian Stredicke
Cc: [EMAIL PROTECTED];
[EMAIL PROTECTED]
Subject: Re: [Sip-implementors] Controlling Redirection
Christian,
� � � � You were correct in the assumption in brackets against the 'Redirect
when not logged in' in my experience, if a proxy which is the registrar for
a UA has no registration for this user it will call process this immediately
as for a no answer event. Then treatment depends on the service and
provisioning of this user - Recorded Voice Announcement 'User unavailable'
or Call Forward to Voice Mail, or Call Forward to another number etc..
� � � � If the UA was registered but not available 'turned off' then the
Proxy Registrar would Invite the UA but this would subsequently fail and
invoke the same no answer treatment as outlined above.
� � � �
� � � � Redirection of FAX messages - now there is a concept. In talking
about a general UA - I am thinking a phone user ? - same process as above
with the UA being currently registered etc. If the UA is registered and
available the Invite would be recieved by the UA but the SDP would be
incompatable eg. the phone end point is not capable of receiving a FAX
message and would return a 415 'Unsupported Media Type' or similar
termination code. I have not tried this scenario out and ao can't say with
100% what you would get. I am not aware of an intelligence in the proxy or
UA that could redirect the incoming call to a FAX.... although that would be
nifty.
Regards,
Wayne Davies
System Support Engineer - Broadsoft
Office: +61 3 96260468
Mobile: 0417282909
email: � [EMAIL PROTECTED]
"Christian Stredicke" <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
11/03/2004 10:49 PM
� � � �
� � � � To: � � � �<[EMAIL PROTECTED]>
� � � � cc: � � � �
� � � � Subject: � � � �[Sip-implementors] Controlling Redirection
Sorry if that's a stupid question.
�
On my cell phone I can set the redirection for the following cases:
�
- Redirect always
- Redirect when not logged in (in SIP that would correspondent to not
registered)
- Redirect when not answering after x seconds
- Redirect Fax messages (?)
- Other cases?
�
3xx is no solution (if the UA is switched off it can't answer). I guess the
proxy or registrar would have to handle this. How would a SIP user agent
tell the proxy or registrar this? Do we already have an RFC or is there
something going on in a working group?
�
Christian
--
Christian Stredicke
tel:+49.30.39833.401 (ENUM & PSTN)
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