Hi
Is there any work being done on implementing IM/SIMPLE support
for SIP on Asterisk? Like a presence server?

rdgs,
/Staffan Kerker

No.


There are currently requests in the system for that functionality (http://bugs.digium.com/bug_view_page.php?bug_id=0000134) but it's waiting for a White Knight to ride up and code a solution.

However, there are some quasi-presence tools that appear to be built into Asterisk in ways that nobody has explained yet. I wouldn't use the term "secret" but the total lack of documentation and/or answers to the questions on how to use these features makes me wonder...

JT



Date: Thu, 16 Oct 2003 03:51:01 -0500
To: asterisk-users-lists.digium.com
From: John Todd <[EMAIL PROTECTED]>
Subject: Use of the "hint" modifiers - examples, anyone?
Cc:
Bcc:
X-Attachments:


I have found some references to the "hint" (or HINT?) variable and method in the source code, but quite a bit of Google-ing has not turned up any extensive answers as to some real-life examples of how to use this perhaps very useful tool. I understand the point of the tool, but I need to get some actual configs to look at before I think I'll figure it out. Even if my particular equipment doesn't support it, there may be other ideas I can get from it. (JerJer - maybe SCCP could use that data if there is an SCCP command of similar nature to the SIP SUBSCRIBE command - that would be pretty handy for those 7914 operator stations.)


Searching through the source gives tantalizing hints (no pun intended) in pbx.c, but no actual real-life samples. Can someone who is familiar with it put some words to the features?

I found this from March 20, 2003 from Andre Bierwirth:

--------
Subject: [Asterisk-Dev] Logged in users
To: [EMAIL PROTECTED]

I am currently work on it. If i am ready Asterisk have functions to get =
device or extension state.

int ast_extension_state(struct ast_channel *c, char *context, char =
*exten)
returns=20
-1 =3D error or no hint(device hint) for extension
 0 =3D extension is free or unknown
 1 =3D one device in extension is busy (have a call)
 2 =3D all devices in extension unavailable(unregistered)

** You can give ast_device_state a Dialstring like SIP/mark or IAX/mark =
**

int ast_device_state(char *device)
returns
-1 =3D error
 0 =3D device is free or unknown
 1 =3D device is busy (have a call)
 2 =3D device is valid but unregistered

So SIP can support SUBSCRIBE requests, and for Snom200 SUBSCIBE Dialogs =
(Map a Key to an extension and see if the extension have a call (the LED =
turned on))

Its easy to implement the device state support for IAX, i have talk with =
mark about it. I implement only the PBX and Channel and SIP functions.

With IAX you can poll the dialplan and get the extension states if its =
implemented.

Andre
-----------

JT


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