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How to distinguish between the normal speech call and video telephony call in TEMS Investigation Event Message?

April 26, 2017distinguish event investigation message normal speech Telephony tems video

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How to distinguish between the normal speech call and video telephony call in TEMS Investigation Event Message?

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To distinguish between a normal speech call and a video telephony call is to identify the different Spreading Factor (SF) used. Normal Speech Calls use SF = 128 and Video Calls use SF = 32 or SF = 64. This information can be observed from Call Setup message in the Event window and WCDMA/GSM Data Line Chart.