Re: Send a SIP NOTIFY via a softphone, not via Asterisk

[Mark Michelson <mmichelson@xxxxxxxxxx>]

Hello,

Asterisk is not a SIP proxy, so it does not forward SIP traffic to destinations. In your case, you're likely seeing a 489 response because Asterisk only knows about specific events in NOTIFY requests ("refer" for transfers, "message-summary" for outbound MWI subscriptions, "keep-alive" for certain devices' NAT keepalives, and "call-completion" for call completion subscriptions. Anything else is not understood by Asterisk, so you get a 489 Bad Event response.

If you want to send NOTIFYs from Asterisk, you must use AMI or the CLI commands to do so.

On 04/28/2015 10:05 AM, Ludovic Gasc wrote:

Hi,

I've a SIP endpoint written in Python-AsyncIO that is registered on an Asterisk 13 with chan_sip.

When I try to send a SIP NOTIFY to another hardphone endpoint (it's to send commands), Asterisk anwsers me with: "SIP/2.0 489 Bad event"

In Asterisk, even with debug level on SIP and in console, I don't have a very interesting message:

[Apr 28 16:57:48] DEBUG[2932]: chan_sip.c:28297 handle_request_do: SIP message could not be handled, bad request: b5262f5c-9061-4cb3-86c6-df629fd95a82                    

An idea to have more details about this error ? Or it's better to use pjsip ?

BTW, is it possible to send a SIP NOTIFY to another endpoint via Asterisk, or it's forbidden ?

PS: I already know it's possible to send SIP NOTIFY via AMI, I've already used that.

But the idea here it's a tool where we don't need an AMI access with Asterisk to run.

Regards.

--

Ludovic Gasc (GMLudo)

http://www.gmludo.eu/

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