28 Dec
2004
28 Dec
'04
6:09 p.m.
Hi all
This question is not connected directly wiht SER but
I didn't find another place. Sorry,
I would like to determine state of UAS ( DND, forward calls
turned on my remote sip phones.
Which tools should I use ? sipsak ? maybe something else.
When I send options method to remote sip phones I always receive
SIP/2.0 200 OK response regardless of activated call features (DND,
forward)
How can I distinguish different state of UAS ?
Thansk
radan
28 Dec
28 Dec
6:23 p.m.
Hello,
On Tuesday 28 December 2004 18:09, radan wrote:
I would like to determine state of UAS ( DND, forward
calls
turned on my remote sip phones.
Which tools should I use ? sipsak ? maybe something else.
When I send options method to remote sip phones I always receive
SIP/2.0 200 OK response regardless of activated call features (DND,
forward)
Note: theoretically a UA should answer on OPTIONS requests like it would do on
an INVITE. But AFAIK almost no UA does it. All UA's which I have seen so far
will always answer with 200. Which is in fact not a bad solution, otherwise I
would have to challenge OPTIONS requests to protect myself against spying
(see below).
How can I distinguish different state of UAS ?
Short answer: there is IMHO no easy way to do this.
Second answer: I simply do not want you to determine the status of my UA (and
thus in-directly my status).
Third answer: probably the most promissing way would be to subscribe to the
dialog status of the UA (but even with that you will probably do not get DND
and forwarding's).
Regards
Nils
29 Dec
29 Dec
1:04 p.m.
I would like to determine state of UAS ( DND, forward
calls
turned on my remote sip phones.
When I send options method to remote sip phones I
always receive
SIP/2.0 200 OK response regardless of activated call features (DND,
forward)
How can I distinguish different state of UAS ?
From my (limited) understanding, OPTIONS is used to
determine which
methods, etc. are supported by the UAS - and not to determine what
subscriber features are enabled. Are you trying to retrieve this
information from a proxy or a phone? It seems like in either case
SUBSCRIBE and NOTIFY would be better methods. But I'm not sure if
there is a standard way to communicate feature activation states.
Dennis
7276
days inactive
7277
days old
2 comments
3 participants
participants (3)
-
dbaron＠MIT.EDU -
Nils Ohlmeier -
radan