Voice over Internet Protocol, a.k.a. VoIP, is the transmission of voice traffic over a data network, e.g. the Internet.
3cx Windows Application
1. Enter the switchboard by clicking the icon at the bottom right
2. Change your view from the default ‘user’ view to one of the other views of your choice.
3. Right click on a call that you have the permission to barge/listen/whisper and perform the desired action.
3CX Web Client
1. Sign in to the 3CX web client. These details will be in the welcome email you received.
2. Click on the switch board tab.
3. Right click on a call that you have the permission to barge/listen/whisper and perform the desired action.
macOS Application
The macOS 3CX application is no longer supported or maintained by 3CX. You need to use the web client to perform this functionality.
It is a software-based phone system, hosted on a virtual server in a data centre, and available anywhere you have a good Internet connection.
An auto-attendant is a voice menu system that answers inbound calls and presents options to the caller. After listening to the options, the caller then responds by pressing a number corresponding to their choice.
A DID is a ‘Direct In-Dial’ number. You can have a single DID or a range of DIDs depending upon your requirements.
A Call Queue is a way to have multiple callers waiting in line to be serviced. They are used extensively by Inbound Call Centres and increasingly by smaller businesses to manage spikes in inbound calls to a small team of users. It allows you to keep the caller on hold much longer than if the phone was just ringing, as the caller is listening to music or some other self-promotional message.
Nothing, this is included in the solution.
As many as you like, within the constraints of your chosen numbering scheme. For example, if you utilise a 3-digit numbering scheme, then you can have up to 1000 extensions.
No, you can have as many of these as you like.
Yes, you can receive and send faxes with 3CX. Faxes are delivered to your Inbox as a PDF attachment. They can be sent using an adaptor plugged into your existing fax machine.
No, PBX Blue provides its own SIP Trunk as part of its solution. Whilst numbers are ported to our system, we will support your old trunk to eliminate any migration glitches.
Yes, if they are supported by 3CX. Please refer to https://www.3cx.com/sip-phones/ for a list of supported phones. Phones with only ‘legacy’ support will be best effort only and may require additional infrastructure to properly support them.
Yes, each user can sync their Outlook Contacts into 3CX.
No, there are no lock-in contracts with PBX Blue.
Yes, we can setup a free trial for 14 days, so you can evaluate the service and all its functionality.
This isn’t true. VoIP call quality is largely determined by the quality of your Internet connection and the correct implementation of QoS. QoS (Quality of Service) is where VoIP traffic on your Internet connection is prioritised ahead of other Internet traffic like web browsing, email, YouTube etc. Think of QoS as being like an ambulance using its lights and siren to get through traffic without having to stop.
No, unfortunately not. ADSL is not appropriate for business grade VoIP systems. At a minimum, you would need an NBN connection. Better still is MBE, Fibre or Fixed Wireless Internet.
This can vary from one week through to a month or longer. A lot of this will depend upon the losing carrier (some of them can be very difficult to deal with) and also whether you need a simple (CAT A) or complex (CAT C) port. During the porting phase we can present the correct caller ID on outbound calls, even before the porting is complete so there is no interruption to your business.
Logging into a phone
To log into a phone enabled for hotdesking, you will need to know your 3 or 4-digit extension number and your voicemail PIN.
Your voicemail PIN will be in your PBX Blue welcome email sent to you when your extension was first created. If you don’t have this anymore, contact our helpdesk and we will send you a new one.
- Check that the phone is currently logged out by seeing if the display shows a number beginning with HD, e.g. HD00001.
If it shows someone else’s extension number, press the Logout button down the side of the display, or dial *77*5*.
- Dial the following code: *77*your extension number*
For example, if your extension number is 106, dial *77*106*
- A voice prompt will ask you for your personal identification number. Type in your voicemail PIN and press #.
- The phone will begin a login process. It will be ready to use when all the lights stop flashing and settle.
Logging out of a phone
Remember to log out of a phone when you are finished so that it will be ready to use by the next person.
To log out, press the Logout button down the side of the display, or dial *77*5*.
The outbound traffic detailed below must be permitted. If you need to limit outbound traffic to a certain destination, you should only do so with the FQDN of your PBX Blue service – we can provide this to you. You should not use the IP address of the service as it can change at any time.
Physical phones provisioned directly to PBX Blue and not through an SBC (including desk phones, conference phones, DECT units, door intercoms etc.):
- Outbound destination port TCP 443
- Outbound destination port TCP + UDP 5060
- Outbound destination port TCP 5061
- Outbound destination port range UDP 9000-10999
Soft clients (i.e. 3CX web client; 3CX Windows, macOS, iOS and Android apps):
- Outbound destination port TCP + UDP 5090
- Outbound destination port 443
Deployments with a Session Border Controller (SBC):
- Outbound destination port TCP + UDP 5090
- Outbound destination port 443
- Phones and SBC should be on the same subnet
The list above assumes that stateful firewalls are in use. If your router or firewall is stateless, you will likely need to create a second set of those rules in the reverse direction.
SIP ALG/helper
SIP ALG (sometimes known as SIP Helper or inspect SIP) must be disabled on your router or firewall. The feature causes more problems than it solves. Please consult the documentation for your router or firewall on how to disable it.
Voice VLAN
You can put physical phones and alike into a dedicated VLAN for voice traffic.
Yealink phones support LLDP for dynamic voice VLAN assignment and it is enabled by default. Consult the documentation for your switch. Alternatively, you can use an OUI-based VLAN assignment feature. At time of writing, the following OUIs are used for Yealink phones:
- 00:15:65
- 80:5E:C0
If you have multiple voice VLANs and have an SBC deployed, ensure the voice VLANs are fully routed and do not have any firewall restrictions between them. Alternatively, you can deploy an SBC within each voice VLAN.
CGNAT
Internet connections that have CGNAT enabled, including mobile internet connections, will not register correctly with PBX Blue when physical phones are provisioned directly to it.
Where possible, please ask your internet service provider to disable CGNAT on your service. Alternatively, you can deploy an SBC. Please let us know if this is required and we will help you out.
Soft clients (i.e. 3CX web client; 3CX Windows, macOS, iOS and Android apps) are not affected by CGNAT and will work.
We recommend that you apply the Quality of Service (QoS) settings detailed below in your network.
Traffic prioritisation
Physical phones provisioned directly to PBX Blue and not through an SBC:
- DSCP tag 46
- Destination port TCP + UDP 5060
- Destination port range UDP 9000-10999
Physical phones provisioned through an SBC:
- DSCP tag 46
- Destination port TCP + UDP 5090
Soft clients:
- Destination port TCP + UDP 5090
Bandwidth reservation
If your internet connection bandwidth is low, we recommend that you apply a bandwidth reservation of 3-4 Mbps for VoIP traffic (depending on the number of endpoints you have). VoIP traffic can be defined by the traffic specified under Traffic prioritisation above. Consult your router or firewall documentation for instructions on how to set this up.
Internet proxy servers are not supported. VoIP is not designed to traverse an internet proxy server.
If you have a proxy server in your network and usually put all your internet traffic through it, you will need to make an exception for the FQDN of your PBX Blue service and ensure no authentication is required. This includes soft clients as they use HTTPS for phonebook and extension status information.
1. Open the DHCP management console and expand the server
2. Expand the scope where the phones are connected
3. Go to ‘Scope Options’
4. Right-click and select ‘Configure Options’
5. Scroll down to Option 66 and select the box
6. Paste the URL provided by us into the ‘String value:’ field
7. Click OK
If you have recently been moved to a new PBX Blue cloud phone system and you already had an extension configured on your 3CX app, you will need to update the 3CX app to point to the new phone system.
You will first need to obtain the QR code which can be found in the PBX Blue Welcome Email for your extension, or by logging into the web client of your extension. Contact the Private Universe helpdesk if you need a new Welcome Email. An example QR code is on the right.
iPhone Users
- Launch the 3CX app – you should see this:
- In the top left corner of the app, click on the three horizontal white bars.
- This will open up the settings. In here, simply tap on ‘Scan QR Code’.
- Point your camera at the QR code. It should scan and reconfigure your 3CX app automatically.
- In the top left corner of the app, click on the three horizontal white bars.
Android Users
- Launch the 3CX app – you should see this:
- In the top left corner of the app, click on the three horizontal white bars.
- This will open up the settings. In here, simply tap on ‘Scan QR Code’.
- Point your camera at the QR code. It should scan and reconfigure your 3CX app automatically.
- In the top left corner of the app, click on the three horizontal white bars.