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The Daily Insight

What is 3CX Tunnel?

Author

Sarah Cherry

Updated on May 03, 2026

The 3CX Tunnel combines all SIP and RTP VoIP Packets from one location and can deliver them to the 3CX servers location on a single port. This allows the traffic to help overcome various firewall and mobile network issues and allows a simpler route to configuring remote extensions on your system.

Just so, how does 3CX work?

3CX is an open standards software-based PBX system. It's based on the SIP standard and works with popular IP phone and SIP Trunks. 3CX enables calls and extensions to be made via traditional PSTN phone lines and VoIP services.

Secondly, how much does 3CX cost? Pricing starts at just $149 for the Standard Edition, $189 for the Pro, and $298 for the Enterprise. Licence changes (from Perpetual to Annual and vice versa) can be performed but will be handled case by case by the 3CX team.

Also to know, how do I use 3CX SBC?

3CX Support

Once the SBC is setup, factory reset a phone in the same LAN as the SBC. It should appear in the management console as a New phone under the Phones tab. Assign it to an extension and press OK. Your phone should now be provisioned and setup to work behind the SBC.

What is hot desking 3CX?

Hot Desking allows local or remote (via SBC) connected IP Phones to be used by multiple users, one at a time. A device currently not used by a user can't make outbound calls, unless the number is defined as an “Emergency Number”.

Related Question Answers

Is 3CX really free?

It's free until it's not free. 3CX has changed their license model over the years and while there's always been a 'free' version the size and features that come with have changed. 2) It doesn't matter where the instances are located. And it's once key per email.

What phones work with 3CX?

Compatible
  • Grandstream GRP26 Series: 2612 (P/W), 2613, 2614, 2615, 2616.
  • Grandstream GXP16 Series: 1610, 1615, 1620, 1625, 1628, 1630.
  • Grandstream GXP17 Series: 1760, 1760W, 1780, 1782.
  • Grandstream GXP21 Series: 2130, 2135, 2140, 2160, 2170.

What is the difference between VoIP and PBX?

Basically, a PBX is an on premise phone system which is not connected to a data network. VoIP (Voice over Internet Protocol) is another form of phone system technology. VoIP means the voice is converted to data, packetized, and transferred over data network. VoIP can be on premise or it can also be hosted.

Does 3CX use asterisk?

Feature-rich – functions and feature sets of 3CX are very comparable to an Asterisk distribution. See here for a complete set of features. Free and Paid commercial versions are available to experiment with and test. Free versions of 3CX software are easily upgradable to any commercial paid version.

Is PBX a VoIP?

Voice over Internet Protocol (VoIP) phone systems represent new technology that challenges the traditional PBX with a more flexible (and generally more affordable) option for businesses. The average VoIP phone system performs many of the same functions of a traditional PBX setup, but does so by using Internet protocol.

Is Skype a softphone?

Skype is a well-known example of communication software that has softphone functionality incorporated into its interface. Given that Skype users are identified through their usernames and not numbers, the dial pad is not often used.

How good is 3CX?

I would strongly recommend the 3CX phone platform over any hardware based PBX system. This means getting started can be very inexpensive, and migrating can be much lower cost than moving to a hardware PBX. As with any phone system, experience or support is needed, but 3CX is well designed for usability.

What is a VoIP call?

Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line.

Can control IVR 3CX?

3CX Support

"Allow IVR control" feature allows this particular extension to control the IVR calls. It means that this user (extension) can Pick Up, Divert and Park the IVR calls from 3CX Phone for Windows (Presence large screen).

What does an SBC do?

A session border controller (SBC) is a device regularly deployed in VoIP networks to exert control over the signaling and usually also the media streams involved in setting up, conducting, and tearing down telephone calls or other interactive media communications.

How does an SBC work?

An SBC locates in the middle of the call path between a service provider and an IP-PBX. When a call is generated and arrives at an SBC from the PBX, the SBC filters out any sensitive information, so no outside intruders can exploit this information for hacking the enterprise VoIP network.

What is SBC Raspberry Pi?

An obvious solution is to employ both an SBC (say, a Raspberry Pi) and a microcontroller board such as an Arduino. It means two processor boards of course with separate programming environments, but sharing a communication interface such as an I2C bus.

Can you set the HTTP port to be TCP 5000 and the https port to be TCP 443 3CX?

If you have other web applications running on ports 80 and 443, then you cannot choose these ports for 3CX. In these cases you can choose port 5000 for HTTP and port 5001 for HTTPS. It is recommended that you KEEP these ports.

Can the 3CX web app be used to remote control not supported IP phones?

Q. Can the 3CX web app be used to remote control non-supported IP Phones? 3CX supported firmware versions for supported IP Phones can be installed via the Management Console.

Can you see the recordings of other extensions in your group?

In other words, extension group managers can only see recordings made by members of their extension group, and their personal recordings. Non-managers can only see their own recordings.

How do I provision a 3CX Phone?

Go to the “Phones page” in the 3CX Management Console. Click on “Add Phone”, select the extension to assign this phone to, and click “OK”.

How do I update my SBC 3CX?

How to Upgrade. Click on “Updates” in the Management Console's Dashboard, select “v16 Update 2” and click on “Download Selected” to install this update on your PBX. Alternatively, you can get the v16 Update 2 for Windows or Linux below: Windows: 3CX v16 Update 2.

Is Elastix PBX free?

Elastix is an unified communications server software that brings together IP PBX, email, IM, faxing and collaboration functionality. Elastix 2.5 is free software, released under the GNU General Public License. Elastix 5.0 is Proprietary released under the terms of the 3CX license.

What does 3CX stand for?

private branch exchange

How does a softphone work?

Softphones are essentially software-based phones. They mimic desk phones by presenting a phone interface on the computer, complete with a dialpad and call handling features (such as Mute, Hold, and Transfer). Furthermore, you can buy third-party softphone apps that will work with a variety of services.

Who owns 3CX?

Nick Galea

What does PBX stand for?

Private Branch Exchange

Can 3CX record calls?

3CX Support

Also recording is done at the extension level. Only calls connected to an extension will be recorded so calls reaching a Digital receptionists and hanging up will not be recorded.

What is SIP trunk and how does it work?

SIP trunks are virtual phone lines that enable users to make and receive phone calls over the internet to anyone in the world with a phone number. SIP trunks utilize a packet switch network, in which voice calls are broken down into digital packets and sent across a network to the final destination.

How do you become a 3CX reseller?

Apply to become a partner
  1. Receive free sales support from a 3CX account manager.
  2. Access marketing resources to help you get the best start.
  3. Get certified and start selling straight away.
  4. Advance to new levels and watch your revenue grow.

How do I use 3CX web client?

In the Web Client, click “Install 3CX Browser Extension” or download the extension from the Chrome Web Store.

Login to the Web Client:

  1. Head over to the “Your User Account on your New 3CX System” email.
  2. Click on your Web Client URL.
  3. Login using the extension and password in your email.

What is the point of hot desking?

The point of hot desking is to save your company money on desks, equipment, and office rent. You can also keep a tidier office, and you may even be able to lessen your company's carbon footprint, benefiting the environment.

What is the purpose of hot desking?

Hot-desking is an organizational workspace system in which desks are used by different people at different times, on an ad hoc basis. Typically, the aim is to maximize space efficiency and lessen real estate risk by reducing redundant office space.

What does login hot desking feature do?

Introduction to Hot Desking

The Infinity PBX Hot Desking feature enables multiple users to log in and make calls on a single PBX enabled handset using their four-digit operator extension number and PIN.