[Blink] Keep Alive

[Mike Phillips]

Adrian:

Thanks for the response. I don't understand all of it, but I did contact
the provider. Here is their response:

"Unfortunately our scope of support is very limited for BYOD setups (with
the exception of troubleshooting VOIPo-network related matters). You may
try checking codec settings the softphone and ensure they are set to PCMU
(a misconfiguration of this settings has caused issues with some users and
their softphones), but if the service works with other softphones it's
could possibly be just a misconfigured setting in the softphone."

I didn't find any misconfigured settings in the softphone, so I assume they
have a misconfigured server. That doesn't explain why Bria and the JK Audio
device work perfectly now, but I'm sure there's an explanation.

Adrian, if you have any interest in testing a VOIPo account, send me an
email, and I'll provide you with the credentials for an account I'm not
using at the moment. It's a US-based number.

Mike

On Tue, Aug 28, 2018 at 2:43 PM, Adrian Georgescu <ag at ag-projects.com>
wrote:

> Hi Mike,
>
> Blink does not have an explicit keep-alive mechanism, but it does respond
> to keep alive packets like an OPTIONS packet sent by a SIP server.
>
> As a rule of thumb, a SIP provider should not depend on clients for
> keeping their registrations alive. Their infrastructure could be missing
> some logic if they need clients to do stuff to stay connected.
>
> If the client registration is lost you could try lowering the registration
> time (again the server could force that as well without any configuration
> in the client) or you can switch to a reliable transport like TCP or TLS,
> again is up to the server to force these as well.
>
> Another culprit could be a broken NAT router, google for "SIP ALG problem”
> whereby a router can break the SIP signalling  by mangling packets. The
> solution is found in the search result.
>
> If you have more specific information about the type of keep alive
> required by the server we could perhaps formulate a more accurate answer.
>
> Regards,
> Adrian
>
> On 28 Aug 2018, at 15:28, Mike Phillips <patlaw at gmail.com> wrote:
>
> I tried using Blink with a VOIPo account, but the results were
> unpredictable. Callers complained that they received busy signals or that
> no one answered. When we switched to another SIP client, the problem went
> away. We then started using the JK Audio IP2 interface, and the problems
> returned. Enabling "Keep Alive" in the JK box solved the problem.
>
> Is there a way to tell Blink to Keep Alive? I've read that forwarding a
> port to the client might help.
>
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