Polycom VVX500 Line Unregistered

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Polycom VVX500 Line Unregistered



Our company has several Polycom VVX500 devices registered through the AT&T Office@Hand service running the latest firmware.


Very randomly and sporadically, the phones will temporarily throw a "Line Unregistered" error with caution signs.


Checking the logs this coincides with this SSL_get_error:

1209145408|sip |5|00|SSL_get_error nLen -1 errno 110 nError 5 = (0)error:00000000:lib(0):func(0):reason(0)
1209145408|sip |4|00|TLS Listen Thread Exit
1209145408|cfg |5|00|Prm|Array parameter key.x.function.prim index 324 is out of range
1209145451|cfg |5|00|Prm|Array parameter key.x.function.prim index 324 is out of range
1209145534|sip |5|00|SSL_get_error nLen -1 errno 110 nError 5 = (0)error:00000000:lib(0):func(0):reason(0)
1209145534|sip |4|00|TLS Listen Thread Exit

Does anyone know what this means? I have been browsing the web for an answer, and I have also been in contact with AT&T Office@Hand to see if it something on their end but no use, the only clue we have is this error in the logs.


The phone will be down for a few seconds then return to normal, happening maybe once or twice a week.

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Polycom Employee & Community Manager

Re: Polycom VVX500 Line Unregistered

Hello @Ttickle ,


Welcome to the Poly Community.

I would suggest you look at the FAQ article:


Jan 19, 2012 Question: How to troubleshoot Poly VoIP related Issues?

Resolution: Please check => here <=


The best and quickest way forward is to contact our Support organisation as the community is run by volunteers only.

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

Best Regards

Steffen Baier


If official support is required please check how to phone or open a case here

The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.


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Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections
Message 2 of 2