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CA missing for TLS security

Hi,

if I use TLS for "SIP Transport" it works fine sending SIP messages. The problem is that the phone doesn know my CA certificate. It is ripe for a man-in-the-middle attack.

Is any way to load into the phone (spa 303, 504g,...) the CA that we use so it can be sure that has contacted with us?

Thank you, Diego Betancor

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