Debug VOIP issues with Watchguard firewall

In Progress

I am having issues with my outside SIP provider (ONSIP) and my internal phones running thru a watchguard xtm505 firewall with ver [url removed, login to view] firmware.

It has to do with NAT traversal as the outside provider shows packets are being dropped.

Calls coming in will breakup where outside caller cannot hear us at times, but they sound crystal clear to us. Calls going out drop about 30 seconds in.

I have tried disabling SIP/ALG and even recreated a sip/alg proxy to no avail.

I also want to setup rules so that only the outside SIP provider can direct calls going in and out of our firewall.

Skills: Computer Security, VoIP

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Project ID: #11732179

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Hello, I am skilled voip engineer with 5 years of experience in asterisk based systems(freepbx, elastix). I like to customize dialplan, to integrate with different systems, like databases, accounting systems, crm's. Ag More

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Hi, I will be pleased to join your project as i possessed the required skills and experience. I have excellent skills on networking, security, technical writing and am confidant to execute your project successfully. P More

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Hello, I read your full job description and I found one thing is that you want VOIP full Solution based on Asterisk. I am not giving you any kind of commercial letter. I just want to give you some screenshot, from wh More

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Hi i am bachelor in computer science and networking i am already cisco certified networking associate routing and switching and security i can help you solving your problem

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