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chrispopp

Trunk gets automatically blocked with Timeout 408

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Was testing creating a trunk between two systems.

The main system has an extension created. On the second system, the extension was registered as a trunk. After a while, the trunk gets a 408 Timeout error. Seems the main pbx does not respond back. 

I then went to the Access tab, and it shows the registration as blocked 0.0.0.0/0. I remove it, and then it gets blocked again. I whitelisted the IP, and although it doesn't show up as blocked anymore, it still shows up as 408 error.

Noticed this in the release notes: SBC: The new SBC algorithm could accidentally block trunk IP addresses. The PB now keeps a separate list for those addresses to avoid the problem.

Only thing is that this is a fix in 62.0.1, and I was testing with 62.0.3.

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Hi Christof,

 

We are aware of this issue and are currently engaged with it. We will update this thread ASAP. 

We have 62.1 right now, if you'd like to give that a go.

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Tried it with the latest build. Same. I even swapped the trunk to an Asterisk server to test. After a few days, 408 again. So it doesn't seem to be a Vodia to Vodia issue, but a trunk issue instead on the actual PBX. 

 

Whitelisting the IP doesn't do any help either.

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Hmm, did you also explicitly list the addresses for the trunk? In the access list you should see in the comment column the name of the trunk - that would be the indication that the PBX has added that address for the trunk. If you do a trunk-trunk you need to do that on both systems.

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I did not use that before. But it's really curious that it does this, when I've tested it multiple times, and it always worked.  I added it and I'll wait to see if it changes...

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