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5xx SRTP never offered, but works on receive

dieswaytoofast
Beginner
Beginner

I'm trying to get SRTP working on our 504s and 525s.  I've uploaded a mini-certificate (and private key), set 'Secure Call Serv' to 'Yes', and set 'SRTP method' to 's-descriptor'.

When the phone receives a valid RFC-4568 offer, it happily encrypts the session (and plays the tones, displays the '%' sign on the screen, etc.)

But the phone *never* offers SRTP on outbound INVITEs.

What am I missing?

Should I be doing something else?

1 Reply 1

dieswaytoofast
Beginner
Beginner

Got it working.  How?  Gave up on using the Web Interface, and just reloaded a config file with all the settings that I wanted. 

Mind you, now I can't get it to *not* offer SRTP, but frankly, I don't care any more :-)

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