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  1. Syed123

    Firewall checker failed

    Hi Alex, Thank you for response. the problem is we have 3cx server which is connected with patton gateway , the customer have MPLS through that they have have connected 5 branches but some how when they start calling after 3rd call trunk between 3cx and patton got unregistered and they have to...
  2. Syed123

    Firewall checker failed

    HI eddv123 Thank you for your response. Let me try the above and will share the feedback. but what if SIP ALG will be disable and still the 9000 and 9001 are blocked than what we have to do ? Regards
  3. Syed123

    Firewall checker failed

    Hi eddv123 Thanks for the response. 1. shall i shoot an email to VOIP PROVIDER? to check from them ? 2. however i have another server on diferent subnet where the SIP ALG is also enable but there only 9000 and 9001 ports are showing blocked rest are okay , because i am facing issue while...
  4. Syed123

    Firewall checker failed

    Hi Guys I have installed the 3CX version 15.5 on windows 10. I have disable the windows firewall and also done the mapping on my CYberoam Firewall but still i am facing this error while running firewall checker. resolving 'stun-eu.3cx.com'... done resolving 'stun2.3cx.com'... done resolving...
  5. Syed123

    Failover 3CX

    We have prepared to one of our 3CX customers a failover server… everything is good, if the main server goes down the failover server comes up but the problem is that the ip phones that were working fine on the main server aren’t provisioning with the failover server. They give the following...
  6. Syed123

    Incorrect external IP address in SDP

    Any one tell me what to do ?
  7. Syed123

    Incorrect external IP address in SDP

    Hi Yiannish Our ITSP is blocking 5060 and 5090 and sometimes the calls from 3G/4G will be muffled for about 15-20 seconds and then afterwards the call quality will be fine so what will be the solution Any Idea?
  8. Syed123

    Incorrect external IP address in SDP

    Hi What if i will change LAN IP in version 14 will it works fine or i need to re install the systm?
  9. Syed123

    GENERIC SIP Configuration

    i am sharing another issue here. We face a lot of voice breaking issues with 3CX system in UAE (on 3g/4G) or in middle east, secondly if ITSP block SIP ports than in that case what we will do , should we configure TLS ? Regards
  10. Syed123

    GENERIC SIP Configuration

    Hi Yiannish Thanks for your reply. let me do this get back to you. Regards
  11. Syed123

    GENERIC SIP Configuration

    Last year we did 3CX call center installation . Now, we had change premises and to change IP addresses of 3CX server and Patton Gateway. We just changed that part of configuration and we have established outgoing calls, but have problem with incoming calls. That is, for some reason Patton GW...
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