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New Contributor

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2 Messages

Mon, Apr 19, 2021 12:27 AM

Series of ports are blocked

Our VoIP system utilizes a series of ports between 9000 and 11000.  Static IPs have been installed and the modem firewalls have been disabled.  However testing continues to fail on the ports between those ranges.  A couple of calls for T2 support continue to state that there are no blocked ports, however our internal testing and the inconsistent behavior of our VoIP system says otherwise.  Is there any other area that may be blocking traffic to these ports?  

Responses

Official Employee

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14 Messages

3 m ago

Hello there! I'm providing a link of blocked ports, just as a reference, though you may have these already: https://comca.st/3x5kNa1

 

Have you already made contact with our Customer Security Assurance team? They're usually the point of contact for this type of concern. Their direct line is t (877) 807-6580.

New Contributor

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2 Messages

3 m ago

Thank you for your response.  I have not contacted the Security Assurance Team, that will be my next step.  I have the list of  blocked ports which are all outside the range of the problem ports.  Our VoIP system is 3CX, when running the port utility it consistently flags those series of ports as failed.  This causes all features other than outbound and inbound calls (call park, hold, transfers, etc.) to not function as 3CX relies on these ports for functionality.  I have spent multiple hours with 4 techs who insist that the ports are not blocked, but here we are.  I will call the Security Assurance Team, but can it simply be a faulty modem?  I've asked for a replacement multiple times and have been turned down. 

Official Employee

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14 Messages

It could very well be, or something in the set-up isn't playing nice. I can look into a replacement device or even a repair technician if you'd prefer, let's start by taking a look at the device from a remote standpoint. Could you start a peer-to-peer message with us? I'll need to collect the account information so I can access the device, and we don't want that shared publicly for all to see. =]