[asterisk-users] how to determine if a SIP extension has DNDonoroff

[Eric "ManxPower" Wieling]

Anthony Francis wrote:
> Eric "ManxPower" Wieling wrote:
>> SIP response 486 is "Busy Here" according to RFC 3326.  Polycoms at 
>> least (and I think Cisco phones) do not send back a different message 
>> depending on if DND is enabled .vs. the line appearance simply being busy.
>>
>> Personally I can't see how the people that designed SIP could justify 
>> not being able to get the DND status or CFWD status of a SIP device.
>>
>>
>> Steve Langstaff wrote:
>>   
>>> The OP was asking whether they could update Asterisk's DND status for
>>> the extension to mirror a DND button on the (SIP) phone. I suggested
>>> that they might act on the response code to an OPTIONS.
>>>
>>> I think that they *actually* want to do some queue management based on
>>> the DND button of the (SIP) phone.
>>>
>>>     
>>>> -----Original Message-----
>>>> From: asterisk-users-bounces at lists.digium.com 
>>>> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of 
>>>> Joshua Colp
>>>> Sent: 14 September 2007 08:43
>>>> To: Asterisk Users Mailing List - Non-Commercial Discussion
>>>> Subject: Re: [asterisk-users] how to determine if a SIP 
>>>> extension has DNDonoroff
>>>>
>>>>       
>>>>> --- Steve Langstaff <steve.langstaff at citel.com> wrote:
>>>>>
>>>>>         
>>>>>> I don't know about the 1.4 source, but in 1.2 I guess you 
>>>>>>           
>>>> would have 
>>>>       
>>>>>> to add some more code to
>>>>>>
>>>>>> handle_response_peerpoke()
>>>>>>
>>>>>> to handle the case where you got a 486 response from the peer.
>>>>>>           
>>>>> ok thanks, so that just seems to confirm that Asterisk
>>>>> 1.2 DND's behavior can't be modified/customized without 
>>>>>         
>>>> patching the 
>>>>       
>>>>> source code. I might forward this issue to asterisk-devel.
>>>>>
>>>>>         
>>>> What do you mean modified/customized exactly?
>>>>
>>>> If you mean can you know whether a device has DND enabled or 
>>>> not before sending a call then no, even an OPTIONS packet 
>>>> won't tell you that. You send a call, they reject (and 
>>>> sometimes they even use a response code that doesn't indicate 
>>>> it's DND). Same goes for call forwarding. You send a call, 
>>>> they reject saying "go here instead".
>>>>       
> When a device is called and it is in CFWD mode it sends back a redirect 
> message (Moved Temporarily), Asterisk displays in the CLI " Recieved 
> "Moved Temporarily" trying XXXXXX thanks to XXX.XXX.XXX.XXX" or 
> something along those lines.
> 
> This helps you know what is in SIP messages:
> http://www.ietf.org/rfc/rfc3263.txt
> 

But there is no method to QUERY the CFWD status.  I understand what 
happens when a call goes to a SIP device with CFWD enabled.