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• Amazon Web Services (AWS) subscription
• Ribbon SBC SWe Lite on AWS
• SBC SWe Lite License 
  • This interop requires the acquisition and application of cloud SIP sessions, as documented at Cloud-Based SBC SWe Lite Deployment Licenses
• Public IP Addresses
• Twilio Elastic SIP Trunk
  • Contact Twilio for Domain, IP and Port information
  • For more details, visit https://www.twilio.com/docs/sip-trunking or see the “Twilio Elastic SIP Trunk Configuration” “Ribbon SBC Edge SWe Lite R9.0 on AWS Interop with Cisco UCM and Microsoft Teams Direct Routing for Twilio Elastic SIP Trunking : Interoperability Guide” section of this document
• TLS Certificates for SBC SWe Lite
  • Please refer to Working with Certificates

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The SBC SWe Lite is available for deployment in AWS. It is created as a virtual machine (VM) hosted in AWS. To deploy an SBC SWe Lite instance, refer to Deploying an SBC SWe Lite via Amazon Web Services-AWS. Once SWe Lite instance is successfully created on AWS, retrieve the allocated NAT Public IPs, Ethernet IPs and Management IP. Also ensure ensure Twilio IP addresses are  are whitelisted on AWS access list. For more details, visit the link given in the References section.

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• This displays a drop-down list of available message tables. Select an entry and click Apply.

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Twilio Elastic SIP Trunk Configuration Twilio Elastic SIP Trunk Configuration

Twilio Elastic SIP Trunk Configuration

From your Twilio Console, navigate to the Elastic SIP Trunking area (or click on the  icon on the left vertical navigation bar).

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Note: Here is where you can enable the use of TLS & SRTP on your Trunk, learn more here.

In the Termination section, select a Termination SIP URI. 

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Note: If you enabled “Secure Trunking”, then you need to include the “transport=tls” parameter in your Origination URIs, learn more here.

Continue to add the other Origination URIs, so you have the following configuration:

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For Microsoft Teams Direct Routing configuration for SBC SWe Lite, refer to the following: Connect SBC Edge to Microsoft Teams Direct Routing

Please check the connectivity for interfacing with Microsoft Teams Direct Routing before making the calls by following the procedure provided at the following link: Working with Connectivity Check - Verifying Service and Port Requirements for CCE and Teams

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For additional information on Teams, please visit:

Best Practice - Troubleshoot Issues with Microsoft Teams Direct Routing and Connect SBC Edge to Microsoft Teams Direct Routing

For detailed information about Twilio Elastic SIP Trunking and solutions, please visit:
https://www.twilio.com/sip-trunking, https://www.twilio.com/docs/sip-trunking and https://www.twilio.com/docs/sip-trunking/elastic-sip-trunking-solution-blueprints

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