Voice Integrations

SIP trunking: Using your Twilio numbers with Conversive

There are many reasons you may want to keep the phone numbers you already have. Switching to a new phone system should not have to mean getting a new number too. With Conversive, there are different ways to use your existing Twilio numbers.

This article explains your options and how to link your Twilio numbers to Conversive using SIP trunking.

Options for using Twilio numbers with Conversive

There are two main ways to use Twilio numbers with Conversive.

Option 1: Port your Twilio number to Conversive You can completely port your Twilio number to Conversive. This option:

  • Lets you use Conversive SMS
  • Lets you use third-party SMS integrations with Conversive

For information on number porting, please see the Conversive porting guide. Important: With this option, you will not be able to send or receive SMS messages through Twilio, since this is not supported on Conversive’s platform at this time.

Option 2: Link your Twilio number to Conversive (SIP trunking) You can also link your Twilio number to Conversive using SIP trunking. This is a great option if you want to keep your SMS services through Twilio while using the Conversive platform for phone calls.

Before linking your Twilio number to Conversive, keep the following in mind: Important:

  • Conversive cannot assist with your Twilio account, including invoicing, configuration, and compliance.
  • Conversive will not be able to help with issues that come up from using your Twilio phone number. For phone quality issues or support, you will need to contact Twilio.
  • Twilio numbers are charged differently than Conversive numbers. Your toll-free inbound calls will be charged on both Conversive and Twilio. Geographic (non-toll-free) inbound calls are free on Conversive but will be charged on Twilio.
  • You cannot use Conversive SMS or third-party SMS with Conversive directly using your Twilio numbers.

You can see below the updated instructions to link your Twilio number to Conversive using SIP trunking.

Step 1: Purchase a number from Twilio If you do not yet have a Twilio number:

  1. Go to the Twilio website and create your own Twilio account.
  2. Purchase a number from Twilio.

Once you have your number, write it down in International Format (E164 Format), for example: +12345678900 Make sure:

  • There are no spaces, dashes, or points.
  • The number starts with the “+” sign as the first character.

Step 2: Create a new SIP trunk

  1. Log in to your Twilio account.
  2. Go to: https://www.twilio.com/console/sip-trunking/trunks
  3. Navigation path: Home > Elastic SIP Trunking > Manage > Trunks
  4. Click Create new SIP Trunk, located:
    • In the upper right-hand corner of the page, or
    • In the center of the page if this is your first SIP trunk.
  5. Type Conversive Trunk as the Friendly Name of your new trunk.
  6. Click Create. From here you can turn on the Call Recording function. Even if call recording is not active on Twilio, you can activate it on Conversive. Deactivate Secure Trunking.

Step 3: Configure your new SIP trunk

  1. After creating the SIP trunk, click the Origination tab to configure it.
  2. Click Add New Origination URI.
  3. In the SIP URI section, add the correct value based on the region of your number:
    • For US: sip:conversive-custom.sip.us1.twilio.com
    • For Europe: sip:conversive-custom.sip.ie1.twilio.com
    • For Australia: sip:conversive-custom.sip.au1.twilio.com

Step 4: Add your Twilio number to this trunk

  1. Go to the Numbers tab of your SIP trunk.
  2. Click Add a Number.
  3. Use filters if needed to find and select your Twilio number. Your Twilio number is now attached to this SIP trunk.

Step 5: Send Conversive your phone number Once you are fully set up on Twilio, you are ready to link your number to Conversive. All you need to do is contact Conversive Customer Support to submit a request for your SIP trunked number to be added to the Conversive Dashboard. Conversive will handle the rest from there.

Important: If you have more than one Twilio number to link to Conversive, repeat the setup steps above for each number. You can include multiple numbers in a single ticket to the Conversive Support Team.