sip register failed

  1. FANVIL X7C (V1) - SIP REGISTER FAILED

    is this a blacklisting problem ? 3CX cloud free. My IP has been blacklisted (again) same as this person ? https://www.3cx.com/community/threads/fanvil-x6u-rev-b-v2-provisionned-but-sip-register-failed.122295/ so logins from my IP phone and from my computers are not possible while...
    • digitalMD
    • Thread
    • blacklisted fanvil x7c sip register failed
    • Replies: 7
    • Forum: Fanvil

  2. SIP Registration Fails after 3CX initiated firmware upgrade

    We have roughly 30 Fanvil X5U and X6U phones. About two weeks ago the supported firmware was upgraded and all these phones displayed in red color in the Phones view. I used the 3CX initiated firmware update function to bring the phones into compliance. I did about 5 phones at a time. All 30...

  3. Help SIP Register Failed Fanvil X4(G)

    Hi Guys, So I am trying to setup 4 phones for my remote customer. My 3cx server is 15.5.10244.4 My desk phone is a Fanvil X 4(G), firmware r2.3.1.4325 I provisioned them with SIP - STUN 2 of the phones were able to make / receive calls for 2 days, the other 2 is constanly showing SIP...

  4. Solved Fanvil X3S(G) Phone - SIP Register Failed

    I have recently obtained a Fanvil X3G phone as I wanted to try out this aesthetically pleasing and economical phone for my customers. I believe it could be quite popular. However, I have been unable to get this phone to register. After reviewing the 3CX website and community forums postings...
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