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Polycom Trio stopped connecting with skype for business on prem

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Polycom Trio stopped connecting with skype for business on prem

All the sudden we can not get our Polycom Trios to connect up inside our network. If we take them to an outside line they connect up which would point to DHCp/DNS issue but i can't seem to locate the issue as all involved parties are reporting "nothing changed".


Polycom Trio Is running Firmware: 

Logs are attached. i can see errors

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Polycom Employee & Community Manager

Re: Polycom Trio stopped connecting with skype for business on prem

@sblendell Hello ,


welcome to the Poly Community.

Please ensure you always check the FAQ's and/or utilize the community search before posting any new topics or follow up posts.


0523105424|sip  |2|00|MakeTlsConnection: case 0x14090086: bFetchRootCert is TRUE
0523105424|sip  |4|00|MakeTlsConnection: SSL_connect error 1
0523105424|sip  |4|00|MakeTlsConnection: connection failed error -1
0523105424|sip  |3|00|CTrans::TCPFail workingServer 3 -> 4 0x4148c5e8
0523105424|sip  |3|00|UA Client Non-INVITE REGISTER trans state 'callingTrying'->'completed' by 480 resp 10 timeout(0x4148c5e8)
0523105424|sip  |2|00|[CTrans::ResponseProcess] REGISTER NonInv reTrans ALREADY stopped in 'completed' state at retryCount 0 code 480, timeout=10 (0x4148c5e8)

Jan 17, 2017 Question:How can I troubleshoot simple Skype for Business, LYNC or Office365 issues?

Resolution: Have a look => here <=


The quickest way to get help would be by opening a ticket.

In order to raise a support ticket you need to work with your Poly reseller as they need to do this for you.

End Customers are unable to open a ticket directly with Poly support.

If this is some sort of an Internet discounter providing your MAC address or your Poly devices serial will enable us to look up who would be able to support you. This may not be who you purchased the Poly device from.

If the unit is no longer within the warranty please be prepared to Pay Per Incident / PPI. This is all outlined in detail here

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

<======== Signature / Disclaimer ========>
Please be aware:For questions about the type of support to expect please check here

Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

The title Polycom Employee & Community Manager is an automatic setting within the community and any forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.
Poly employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and maybe answered on weekends, bank holidays or personal holidays.
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