Explanation
The Avaya WebRTC Snap-in enables users inside or outside the Enterprise to make a secure call from their web browser to any endpoint to which Avaya Aura can deliver calls.
The WebRTC Snap-in supports 1800 simultaneous calls at a rate of 28,000 BHCC in the following deployment model:
1 Avaya Breeze server
1 Avaya Session Border Controller for Enterprise (Avaya SBCE) server
8 Avaya Aura Media Servers
References: Avaya WebRTC Snap-in Reference, Release 3.1 (May 2016), page 26
https://downloads.avaya.com/css/P8/documents/101013939

Explanation
The Avaya AES server forwards CTI requests, responses, and events between Invision CTI Server and Communication Manager. The Avaya AES server communicates with Communication Manager over an AES link. Within the AES link, CTI links may be configured to provide CTI services to CTI applications such as Invision CTI.
Step 1: Enter the display system-parameters customer-options command. On Page 3, verify that Computer Telephony Adjunct Links is set to y.
Step 2: Enter the add cti-link m command, where m is a number between 1 and 64, inclusive.
Enter a valid Extension under the provisioned dial plan in Avaya Communication Manager, set the Type field to ADJ-IP, and assign a descriptive Name to the CTI link.
Etc.
References: Application Notes for Invision CTI with Avaya Aura Communication Manager and Avaya Aura Application Enablement Services - Issue 1.0, page 6
https://www.devconnectprogram.com/fileMedia/download/edd26666-ae98-4f15-9a2a-a156d0807160