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Buy a phone number from Wavix

Before placing or receiving a call, you need to have an active phone number on your Wavix account. If you already have one, you can skip this section.
  1. Sign in to your Wavix account.
  2. Click on Buy under Numbers & trunks in the top menu.
  3. Select the country and region where you wish to purchase a number.
  4. Choose one or more numbers and click Buy now.
  5. Review the Cart and complete checkout.
Some numbers require proof of local address or other documents before activation. Upload any requested documents and wait for the Wavix Provisioning team to approve them before the numbers become active.

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Create a SIP Trunk on the Wavix platform

  1. In the top menu, go to Numbers & Trunks → Trunks.
  2. Click Create new.
  3. Under Authentication Method, select Digest.
  4. Enter a SIP trunk name, set a SIP trunk password, and choose one of your numbers as the Caller ID.
  5. (Optional) Configure additional limits. If not specified, global account limits apply:
    • Max outbound call duration
    • Max number of simultaneous calls via the SIP trunk
    • Max call cost
  6. Click Create.
Once the SIP trunk is successfully created, it will appear in your account’s SIP trunks list. Configure SIP trunk screenshot
Your 5-digit SIP trunk username is generated automatically and shown in the SIP trunk ID column.

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Configure SIP trunk in 3CX

To configure inbound and outbound calls on your 3CX instance:
  1. Log in to the 3CX management console
  2. In the left-hand menu, go to Voice & Chat
  3. Click the Add SIP Trunk button
List of SIP Trunks in 3CX Management Console Next, select your country and choose Wavix from the list of SIP Trunk providers in your country. If you do not see Wavix listed, try selecting ‘Worldwide’ in the Country list. You can check the list of supported SIP trunk providers on the 3CX website at https://www.3cx.com/partners/sip-trunks/.
If you do not see Wavix on the list of supported SIP trunk providers, download and import the wavix.pv.xml file. This will automatically populate some of the SIP trunk configuration parameters.
Follow these steps to add Wavix as your SIP trunk provider:
  1. In the Account Details section, enter the SIP trunk ID and password that you set up for the SIP trunk on the Wavix platform
  2. Enter your default Caller ID into the Main Trunk Number field. The Caller ID should be an active or verified phone number from your Wavix account.
  3. In the Server Details section, enter the address of one of Wavix’s regional SIP proxies in the field labeled Registrar/Server. We recommend using the address of the regional SIP proxy closest to your location. You can find the full list of Wavix regional gateways at the bottom of the Trunks section in Wavix.
  4. Add a name for your 3CX Trunk
  5. Click the Save button to save your configuration
Add a new SIP Trunk
By default, a new 3CX Trunk supports up to 10 calls in parallel. However, all new Wavix accounts are initially limited to 2 simultaneous calls for security reasons. To request an increase, please contact [email protected].
Click on the Options tab and ensure that both inbound and outbound calls are allowed in the Configuration section. SIP Trunk Options tab Scroll down to the Codec priority section. Wavix supports all the codecs listed, but PCMU is recommended for most cases. To save the SIP trunk configuration, click OK at the top of the page. It will take a moment for 3CX to register the SIP Trunk. A green bubble will indicate that the SIP Trunk is successfully registered. If any issues occur, check the Event logs in the 3CX Management Console dashboard for more details. SIP Trunk successfully registered

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Activate IP authentication

The Wavix platform supports IP authentication for dedicated IP addresses. To activate IP authentication for your SIP device, you need to enable this feature in your 3CX device and on the Wavix platform. Follow these steps in your 3CX:
  1. Open your 3CX SIP Trunk settings
  2. Select the Worldwide option in the Country list and choose Generic SIP Trunk (IP Based) in the Provider list
  3. In the Account Details section, enter the SIP trunk ID for the SIP trunk from the Wavix platform
  4. Enter your default Caller ID in the Main Trunk Number field. The Caller ID should be an active or verified phone number from your Wavix account.
  5. Set the Type of authentication to Do not require − IP based from the drop-down menu
  6. In the Server Details section, enter the address of one of Wavix’s regional SIP proxies in the field labeled Registrar/Server. We recommend using the address of the regional SIP proxy closest to you. The full list of Wavix regional gateways can be found at the bottom of the Trunks section in Wavix.
  7. Add a name for your 3CX Trunk
  8. Click the Save button to save the configuration
SIP Trunk IP details To activate the IP authentication on the Wavix platform:
  1. Open the Wavix SIP trunk settings
  2. Select IP Authentication in the Authentication method section
  3. Enter your 3CX dedicated IP and click Submit
  4. Click Save to apply the changes
Wavix SIP trunk IP authentication IP authentication will be activated on your Wavix SIP trunk once the request is approved by the Wavix OPS team.
After submitting the IP authentication request, you cannot update your IP address or change the authentication method. By default, an IP address can only be mapped to a single SIP trunk. If you need to have several Wavix SIP trunks sharing the same IP address, please contact [email protected].

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Configure outbound calls

To place outbound calls you need to configure outbound rules. Follow these steps to configure your outbound rules:
  1. Click on the Outbound Rules option in the left-hand side menu and click the Add button
  2. Assign a name to your Outbound Rule and apply it to the default extension group by:
    • Clicking the Add button in the Apply this rule to these calls section
    • Selecting the DEFAULT group name
    • Clicking OK
  3. Scroll down to the Make outbound calls on section, select Wavix, and save the Outbound Rule
Assign an Outbound Rule to extension Set route for an Outbound Rule
All destination phone numbers must be in the E.164 international format. The E.164 format can handle numbers with up to 15 digits and is usually written as: [+][country code][subscriber number including area code].
Example: A US number in E.164 format would be +16561223344.
Calls to numbers without a country code or carrying national access codes will be rejected by the Wavix platform.
Below are typical examples of phone numbers incorrectly formatted according to the E.164 international standard:
CountryNumberReasonNumber in E.164 format
US6561223344No country code+16561223344
UK020 1122 3344No country code, national access code with 0+442011223344
Switzerland0041797000777Leading 00 international prefix+41797000777
Depending on your users’ dialing habits, you may want to strip leading digits or prepend a country code. For example, the configuration below can be used to prepend all dialed numbers with the leading 1 if your users are accustomed to US domestic numbers in the national format. Custom dial rule configuration

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Configure inbound calls

If you have enabled IP authentication for your SIP trunk, scroll down to the “Configure inbound call routing for trunks with IP authentication” section.
Open the SIP Trunk configuration settings and select the Default route for inbound calls. Inbound Rule configuration Depending on your business needs, you can set specific office hours for inbound calls and route them to different extensions, voicemail, or drop calls based on schedule. Wavix DID configuration For calls to be routed to your 3CX instance, follow these steps in your Wavix account:
  1. Log in to your Wavix account
  2. Select My numbers under Numbers & trunks in the top menu
  3. Click on the three dots next to the number you want to edit (right-hand side) and select Edit number
  4. Select the destination trunk in the Destination section
  5. Click Add to add the destination for the DID
  6. Click Save to confirm the settings
Bulk DID edit on the Wavix platform
Changes will be applied to all selected numbers.

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Configure inbound call routing for trunks with IP authentication

Skip this section if your trunks are configured to use account-based authentication.
When an inbound call reaches Wavix, it can be routed to your SIP trunk, a SIP URI, or a PSTN number.
SIP trunks with IP authentication enabled cannot be used for inbound call routing as they do not maintain registration with Wavix SIP proxies. To configure inbound routing for your numbers, you must specify a valid SIP URI address instead.
To configure inbound call routing to a valid SIP URI:
  1. Log in to your Wavix account
  2. Select My numbers under Numbers & trunks
  3. Click on the three dots on the right-hand side and select Edit number. Double-click is also supported.
  4. In the Transport drop-down menu, select SIP URI
  5. Enter a valid SIP URI using the following format: +[did]@FQDN:port;transport=connection, where:
    • FQDN: fully qualified domain name or IP address of your 3CX instance
    • Port: SIP port used by the PBX
    • Connection: can be udp, tcp, or tls. The default transport is udp.
  6. Click Add to add the destination for the DID
  7. Click Save to apply settings
The [did] parameter will be automatically updated with the actual dialed phone number when routing the call.
You can also edit multiple numbers simultaneously. To do this, select multiple numbers you want to modify, then click on the Bulk actions button. The changes will apply to all selected numbers. Make sure that all your Wavix numbers are listed under the DIDs tab of the 3CX SIP trunk. Wavix DID configuration

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Verifying the setup

To test the SIP trunk, place a call to your mobile phone number. Follow these steps:
  1. Go to Users in the left-hand side menu
  2. Click on the default 100 extension
  3. Download the 3CX mobile application by scanning the QR code displayed on the page
  4. Place a test call using the app
3CX extension

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Troubleshooting

If an outbound call fails, check the following:
  • You have completed all the steps in this guide.
  • The phone number you are dialing is in the international E.164 format.
  • The maximum call rate limit on your SIP trunk or account is enough to call the desired destination. You can check your effective rates in the My account section at app.wavix.com.