WebRTC on mobile devices for Genesys

04/12/2018

WebRTC has been around for some time now. However, it has never been easy to set up, configure and eventually make it work. That also applies when WebRTC is set up with Genesys PureEngage contact centre software. This article describes our experience and findings with WebRTC and making it work with Genesys PureEngage and mobile devices.

Genesys contains a WebRTC Gateway server that connects with their SIP server. To make this work, you need to place the WebRTC server inside the DMZ. With this architecture, the setup of the call path requires additional STUN and TURN servers. Due to the need for TURN servers, the overall solution becomes more complex and requires additional hardware. In case you need transcoding, all voice streams go through the TURN servers, creating a potential bottleneck.

Another problem is that only a JavaScript SDK is available and therefore this WebRTC architecture cannot be deployed on mobile devices.

We therefore decided to abandon this path and look for an alternative solution.

After scanning several options, we finally came up with the Audiocodes SBC, which has a WebRTC gateway embedded. The advantage of this setup is the simplicity of the architecture. Since the WebRTC gateway is online (SBC works as a firewall), there is no need for additional TURN servers. You only still require a simple STUN server (we took the easy road and used one from Google).

After configuring the SBC to work with the SIP server from Genesys, we are now able to setup WebRTC calls with SIP enabled agents. On top of that, iOS and Android SDK’s are recently available, next to the existing JavaScript SDK.

Our Mobile Office solution now also embeds these mobile SDK’s. Hence Mobile Office is now fully supporting WebRTC call functionality for contact centre agents using the Genesys PureEngage platform.

Article written by Dirk Slootmaekers (CTO at ideal systems)

WebRTC on mobile devices for Genesys
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