[Blink] BLINK FOR WINDOWS - Problem when using the buttom ON HOLD in calls, with another softphone

Dan Pascu dan at ag-projects.com
Tue Dec 11 16:35:46 CET 2012

Can you please provide the SIP trace logs from blink for the case you consider to be in error? I need to see the whole request/reply sequence, because I'm not sure from your description what is the dialog state when what you describe happens. Point me to the message/reply in the trace that you consider to be in error, but I need all the previous requests/replies in the dialog to be able to assert the dialog state at that point.

On 10 Dec 2012, at 15:56, Peliza Carlos wrote:

> Hello my name is Carlos and I'm trying to obtain my graduation as an engineer.doing my thesis, which is to test the interaction between
> free softphones in calls against Eyebeam.
> One of the tests to be performed, is a call from "Blink" to  Eyebeam.
> Pressing the HOLD ON button on Blink, waiting a while and re-press the HOLD ON to continue the call.
> In this test, I have observed:
> The RFC 2543 is obsolete and there is not used by Blink.
> According to RFC 3264  the procedure should be:
> 1) Who puts ON HOLD (Side A) sends an invite with "sendonly" attribute in SDP
> 1.a) If the media stream was the result of a prior "sendrecv", side B  responds "recvonly"
> 1.b) Side B send an "inactive" attribute after "sendonly" receive, if the media stream  was the result of a prior "recvonly"
> 2) To re-press "ON HOLD", the A side sends the attribute "sendrecv"  or empty  (due to sendrecv is the default value)
> 3)Conversation is restarted .
> However, in my tests, BLINK sends recvonly instead of sendrecv, to resume the conversation therefore never occurs again.
> Please tell me  you found if this problem in tests, and let me know your opinion.
> Thank you and happy to help
> <image003.jpg>
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