[Blink] New Blink Qt 3.0.0 version for MS Windows

Dan Pascu dan at ag-projects.com
Mon May 8 08:50:06 CEST 2017

On 05/08/17 03:32, Mediacast Guy wrote:
> On 3/11/2017 10:19 AM, Dan Pascu wrote:
>> On 10 Mar 2017, at 23:03, Mediacast Guy wrote:
>>> On 3/10/2017 8:23 AM, Dan Pascu wrote:
>>>> On 9 Mar 2017, at 14:58, Mediacast Guy wrote:
>>>>> On 1/11/2017 11:23 AM, Adrian Georgescu wrote:
>>>>>> This Windows version features SIP call transfer, migration to latest Google contacts API and several bug fixes. Graphical user interface has been migrated to Qt5.
>>>>>> The automatic updater should kick in. To manually upgrade your Blink version go to:
>>>>>> http://icanblink.com
>>>>> I'm missing something. Where is call transfer in the Windows version? I have version 3.0.0 installed, and the update
>>>>> checker says it's the latest version.
>>>> http://icanblink.com/help/manual-qt/audio-calls-linux/#call-transfer
>>> Thanks for pointing that out. I'm sorry I missed it. It works great. What's strange is my VOIP provider (VOIPo) said
>>> they don't have call transfer on their residential accounts yet it clearly works.
>> Call transfer is a function of the client not of the provider.
> I just tried to do a transfer with Blink and my VOIPo number, the same one that worked in the exercise above. When I
> initiated the transfer, Blink said "trying" the transfer but never connected. If I dial the number directly, it works.
> Am I doing something wrong?

The SIP service provider must support forwarding in-dialog REFER 
messages, as well as allowing the Referred-By and Refer-To headers in 
INVITE requests for call transfer to work.

If you see Blink displaying 'trying' and not moving forward with the 
call transfer is most likely that the REFER message was not delivered to 
the destination or the destination doesn't know how to handle it, but a 
SIP trace is needed to confirm what actually happened.

If this call was with a PSTN number and you attempted to transfer that, 
it's very likely to fail as no SIP-to-PSTN gateway I know of implements 
call transfer functionality.

You need both SIP endpoints to support call transfer and a SIP provider 
that does forward in-dialog messages correctly for this to work.

More information about the Blink mailing list