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How the calls are recorded in call history of TE10

Publication Date:  2017-08-23 Views:  990 Downloads:  0
Issue Description

Customer has enabled the call settings so he can manually configure the call options. 

He choosed video call but in the call history list, that specific call was stored as Voice call.

Because in the Remote control UI there is no indication of call types in the history, he complained about the fact that every call from history are audio calls only.


TE10 firmware version: V500R003C30SPC200

Solution

For a precise analysis, we asked the customer to replicate the issue and asked for network captures:

1. The first INVITE packet is indeed sent with Video SDP negotiation paramters, confirming the customer's scenario: 



2. The 200 OK received indicates the remote side negotiated only audio. The conclusion is that the call is audio ONLY and it will be stored as Voice.



3. Customer thought this call was video and when he chose it from history, it started automatically as audio. This is also revealed in the captured packets of the second call:

The SDP contains only audio parameters. This call is Voice.


4. It is obvious that the 200 OK SDP will contain only audio paramters: 


As a conclusion, if the call is eventually negotiated as audio, will be recorded as Voice. And if it is negotiated as video, will be recorded as Video


END