[Linphone-developers] TLS not work on 4G

[LukeWang]

Hi,All.

    I use linphone android 3.7.2, registered successfully to cisco VCS .When I dialed into

a conference ("Codian MSE 8510" SIP:address@hidden) ,if I use WIFI connection everything is ok, but when I change

to 4G LTE ,the conferenece will disconnection after about 30 seconds.

I checked call log,the difference between wifi call and 4g call is .

Error occured when SSL handshake ,

Channel [0x7a900008]: SSL handshake failed : SSL - An invalid SSL record was received.

Cannot connect to [TLS://HIDDENADDRESS:5061]

channel 0x7c38e008: state ERROR

So after about 30s,a BYE recieved from  the conference "Codian MSE 8510"(SIP:address@hidden).

Reason: SIP ;text="Timed out expecting ACK"

but in a WIFI network,SSL handshake is OK.

Channel [0x76c1d008]: SSL handshake in progress...

Channel [0x76c1d008]: SSL handshake finished.

channel [0x76c1d008]: message sent to [TLS://HIDDENADDRESS:5061], size: [594] bytes

So,why SSL handshake  failed in 4G network?

I use polycom RealPresence android app for testing,it will work either wifi or 4G.

Sorry for my bad English ,Hope you can understand my question, Thanks.

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LukeWang