[Asterisk-Users] Re: SIP Disconnect Supervision

[Steve Blair]

Doug Meredith wrote:

>Steve Blair <blairs at isc.upenn.edu> wrote:
>
>  
>
>> I have a case where a call from the PSTN to our SER proxy goes unanswered.
>>As a result it is relayed to our Asterisk server for voicemail. However 
>>before
>>the greeting plays the caller hangs up. This results in an empty message
>>being created and emailed or the mwi gets activated.
>>
>> I saw a few posts about Disconnect Supervision and Disconnect Supervision
>>with inbound SIP connections but I did not see any resolution to the SIP
>>question.
>>
>> Does this sound like a SIP Disconnect Supervision issue? If not what seems
>>to be the issue? Also does anyone have any suggestions on how to stop
>>these messages from being created?
>>    
>>
>
>I think you may be misunderstanding this a bit.  Disconnect
>supervision is a PSTN issue not a SIP issue.  Presumably your problem
>occurs because the caller hangs up and the telco doesn't signal this
>to you in a timely fashion.  Therefore your device doesn't go on hook
>and it doesn't tear-down the SIP session.
>
>  
>
Thanks. My issue is a SIP issue.

>Doug
>  
>

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