How to Setup Sip voip where it restricted?

[bl1k00]

Hello everyone,

I’m currently facing a challenge and would greatly appreciate your advice and suggestions.
Background:

• I am based in the Oman where VOIP protocols are restricted.
• I have a SIP trunk in the UAE.
• I need to set up my system to receive calls from the EU and US.
• The IP PBX can only be used on-premises; using cloud services is not an option.

Objective:
I want to configure my setup so that I can receive international calls from the EU and US through my on-premises IP PBX.

Challenges:

1. VOIP restrictions in the Oman.
2. The requirement to keep all infrastructure on-premises.
3. Ensuring reliable and high-quality call connections.

Questions:

1. What is the best way to configure my SIP trunk and IP PBX to handle international calls under these conditions?
2. Are there specific configurations or hardware that I should consider to optimize performance and compliance?
3. Has anyone had success with a similar setup in the Oman, and what best practices can you share?

Any insights, detailed configurations, or experiences you can share would be incredibly valuable.

Thank you in advance for your help!

Best regards.

[HostingRaja]

To set up SIP VoIP in restricted environments, use SIP over HTTPS or VPNs to bypass network restrictions. You can also try changing SIP ports or configuring STUN/TURN servers for better NAT traversal.