Induction is updating the look and delivery methods for the Attend Anywhere platform. The change will be in stages and is currently scheduled to bein in December 2023 (date TBC). Work is scheduled to continue until May. This means the network requirements for the service will change. The current requirements will have to overlap for up to eight weeks in the unlikely case a roll-back is required.
The new call screen will be based around the use of Amazon Chime which has the following requirements for continued use of Near Me:
Amazon Chime SDK Whitelisting
Configuring for media and signalling
Amazon Chime SDK audio, video, and content use User Datagram Protocol (UDP) transport whenever possible. If UDP is blocked, the Amazon Chime SDK tries to establish a Transport Layer Security (TLS) connection for bidirectional media transport. Amazon Chime SDK signalling and data messages use Transmission Control Protocol (TCP) and WebSocket connections. The following diagram shows a typical network with an application that runs the Amazon Chime SDK.
The Amazon Chime SDK uses the following destinations and ports for media and signalling.
| Domain | Subnet | Ports |
| *.chime.aws | 99.77.128.0/18 | TCP:443 UDP:3478 |
This subnet is the CHIME_MEETINGS service in the AWS IP address ranges.
Configuring for Amazon Voice Focus
The Amazon Chime SDKs for iOS and Android include the Amazon Voice Focus module. The Amazon Chime SDK for JavaScript downloads the Amazon Voice Focus module from Amazon CloudFront.
Amazon Voice Focus uses the following destinations and ports.
| Domain | Ports |
| *.sdkassets.chime.aws | TCP:443 |
This subnet is the CLOUDFRONT service in the AWS IP address ranges.
Configuring for echo reduction
The Amazon Chime SDK for JavaScript downloads the echo reduction module from Amazon CloudFront.
Echo reduction uses the following destinations and ports.
| Domain | Ports |
| *.sdkassets.chime.aws | TCP:443 |
This subnet is the CLOUDFRONT service in the AWS IP address ranges.
Configuring for background replacement and blur
The Amazon Chime SDK for JavaScript downloads the background replacement and blur module from Amazon CloudFront.
Background replacement and blur uses the following destinations and ports.
| Domain | Ports |
| *.sdkassets.chime.aws | TCP:443 |
This subnet is the CLOUDFRONT service in the AWS IP address ranges.
Configuring browser content security policies
When you build an application with the Amazon Chime SDK for JavaScript, you need to configure the browser content security policies in your application. For more information, refer to the Content Security Policy Guide on GitHub.
Chime Testing Page: Amazon Chime Readiness Checker
Further references:
Amazon Chime Firewall Simplification
Hosts, Ports and Protocols needed for Amazon Chime services