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T-38p losing registration and not re-registering
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AnthonyCNCS Offline
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T-38p losing registration and not re-registering
Hi All,

I wasnt sure where to post this and im slightly sure this is the wrong place but ill ask anyway.

Ive recently started using some T38 from Yealink and they are configured to use a remote hosted (cloud) pbx service. Its all been fine and dandy until recently where some handsets (random) will lose regsitration and will not re-register regardless of what happens. IE reboot the handset, go into the handset web interaface and disable and enable the account. The only solution is the reboot the network f/w // router.

The weirdness appears when the phones were working for months without issue, and since 3 days ago now start this behaviour.

Like i said probably wrong place to ask this question but all help appreciated.

Thanks all in advance!

PS: bonus question -- are there any command line utilities to test SIP connections? for troubleshooting purposes.
03-20-2014 06:11 AM
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CWR Offline
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RE: T-38p losing registration and not re-registering
did the phones firmware change recently? some cloud providers push updates... you might consider contacting them. they might have some recommendations.
03-20-2014 07:42 AM
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AnthonyCNCS Offline
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RE: T-38p losing registration and not re-registering
No firmware changes though the T38g are latest version from yealink. The providers do not have admin rights or access to the handsets other then providing :5060 to the handsets. Is there functionality in SIP to allow providers to do such changes?
(This post was last modified: 03-20-2014 08:14 AM by AnthonyCNCS.)
03-20-2014 08:13 AM
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CWR Offline
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RE: T-38p losing registration and not re-registering
We have some yealinks on Nextiva and upon boot the phones can and have received a new firmware... Do you have a provisioning URL setup in the phone?
(This post was last modified: 03-20-2014 09:13 AM by CWR.)
03-20-2014 09:12 AM
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splash112 Offline
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Post: #5
RE: T-38p losing registration and not re-registering
Did you resolve this problem? It seems I have the same with the Yealink T22P
04-09-2015 11:31 AM
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