How to differentiate between Delivery Server and Mobile Encoder in EngageOne Video

Products affected: EngageOne Video
Referring to the EngageOne Video high level architecture diagram below, the Delivery Server is responsible for processing each video request. It also generates the video if the request comes from any device, except from an iPhone. Generation of video for an iPhone is the sole responsibility of the Mobile Encoder.

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UPDATED:  June 6, 2017