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Dear all,

I'm continuing my tests of Kerio Operator 2.4 and just discovered that SRTP does not work with Grandstream Devices. I have GXV3270 and call attempt with STP fails with "488 Not Acceptable".

Yes, I know that it's problem that previous version of Asterisk does not support lifetime for cryptographic keys, and clearly not Kerio Operator. However there are already patches available to support SRTP with Grandstream. Is here any plans from Kerio to integrate it into Kerio Operator 2.4?

Thanks a lot!

Reference on Asterisk: issues.asterisk.org/jira/browse/ASTERISK-17899
Reference on Grandstream: www.grandstream.com/support/faq/gxp-enterprise-phone-series# 25

Best Regards,

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Dear Baguk,

Please check your PM i have sent you instruction to fix the issue which was caused by the crypto life time.

The new firmware have the option to disable it and allow you to use SRTP without any issue, Thanks.

Best Regards,

Vladimir Toncar (Kerio)

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Operator will include support for encrypted calls with Grandstream once we are sure the encryption works reliably. Right now, I am not able to say what particular Operator version that would be.

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