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Using Twilio without giving VAPI full control over...
# support
i
I'm trying to understand how I would connect my Twilio number(s) into VAPI in an enterprise setup. I'm not comfortable providing VAPI the full Auth Token for my Twilio account, which is account-scoped and has full access to all APIs. Is there an manual alternative?
v
message has been deleted
@its.jcw Absolutely, I understand your concern regarding security and the need for a manual alternative that doesn't require sharing your full Twilio Auth Token. VAPI provides a way to connect your Twilio numbers using SIP Trunking. This method allows you to manually configure your Twilio numbers to send and receive calls through VAPI's SIP Trunk without sharing your Auth Token. Here's a high-level overview of the steps you would take: 1. **Create a SIP Trunk in Twilio**: You'll need to set up a SIP Trunk within your Twilio account. This will act as a bridge between Twilio and VAPI. 2. **Configure Origination and Termination URIs**: In the SIP Trunk settings, you'll specify the Origination URI (for incoming calls) and Termination URIs (for outgoing calls) provided by VAPI. This will direct the call traffic to and from VAPI. 3. **Secure the Connection**: Ensure that you configure the SIP Trunk with secure settings, such as using Transport Layer Security (TLS) for encryption and Secure Real-Time Transport Protocol (SRTP) for secure voice communication. 4. **Update DNS Settings**: If required, update your DNS settings to ensure that your Twilio numbers can resolve to the VAPI SIP Trunk. 5. **Test the Configuration**: Before going live, thoroughly test the setup to ensure that calls are correctly routed through VAPI and that all features are working as expected. By following these steps, you can connect your Twilio numbers to VAPI without sharing your full Auth Token, maintaining a higher level of security for your account. If you need detailed instructions or assistance with any of these steps, please let me know, and I'll be happy to help!
You can continue this conversation by mentioning me in the message.
i
@Vapi under the SIP Trunk setup, would i have control over which numbers were connected the trunk or does this take over all numbers in the account
v
@its.jcw Yes, you have control over which numbers are connected to the SIP Trunk. In Twilio, you can individually configure each phone number to use a specific SIP Trunk. This means you can choose which numbers you want to route through VAPI's SIP Trunk and which ones you don't. The setup does not automatically take over all numbers in your account; it's a per-number configuration. Here's how you can do it: 1. **Assign Numbers to SIP Trunk**: In your Twilio console, go to the 'Phone Numbers' section, select the number you want to route through VAPI, and configure its voice settings to use the SIP Trunk you've set up for VAPI. 2. **Repeat for Other Numbers**: Repeat the process for each number you want to connect to the VAPI SIP Trunk. This selective configuration allows you to maintain granular control over your numbers and how they interact with different services. If you need further assistance with the configuration process, feel free to ask!
i
@Vapi could i use call routing on the number to say, forward to a cell phone, and then if it times out due to no answer, THEN connect the call to the SIP Trunk?
v
@its.jcw Yes, you can set up call routing on your Twilio number to first attempt to forward the call to a cell phone and, if there is no answer within a specified timeout period, then route the call to the SIP Trunk connected to VAPI. To achieve this, you would use Twilio's programmable voice capabilities, typically by setting up a TwiML (Twilio Markup Language) application or using Twilio Studio to define the call flow. Here's a simplified example using TwiML: 1. **Create a TwiML Bin or Server-Side Script**: You would write TwiML instructions or a server-side script that first uses the 
<Dial>
verb to attempt to call the cell phone number. 2. **Set a Timeout**: Within the 
<Dial>
verb, you can set a 
timeout
attribute that specifies how many seconds Twilio should wait for the call to be answered before giving up. 3. **Fallback to SIP Trunk**: If the call is not answered within the timeout period, Twilio will execute the next instruction in the TwiML, which can be another 
<Dial>
verb that connects to the SIP Trunk (using the SIP URI provided by VAPI). Here's an example of what the TwiML might look like:
Copy code
xml
<Response>
  <Dial timeout="20">
    <!-- Number to forward to -->
    <Number>+1234567890</Number>
  </Dial>
  <!-- If the call isn't answered, route to SIP Trunk -->
  <Dial>
    <Sip>sip:your_vapi_sip_uri@vapi_sip_trunk</Sip>
  </Dial>
</Response>
This TwiML script tells Twilio to try calling the cell phone number for 20 seconds, and if there's no answer, it will then route the call to the SIP Trunk. Remember to replace 
+1234567890
with the actual cell phone number you want to forward to and 
sip:your_vapi_sip_uri@vapi_sip_trunk
with the actual SIP URI provided by VAPI. If you need help setting this up or have any other questions, feel free to ask!
i
@Vapi mark as solved
v
@its.jcw Sweet. Have a great day!
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