AES Encryption. Page 2 AES Encryption Description Previous versions of Encryption were only available between Zultys phones. Version 3.0 adds encryption.

AES EncryptionAES Encryption

Page 2

AES Encryption DescriptionAES Encryption Description

• Previous versions of Encryption were only available between Zultys phones.

• Version 3.0 adds encryption between the phone and the MX. This ensures that calls to the PSTN are encrypted to the edge of the IP network.

• Encrypted calls can be terminated on an AA or even the VM server.

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Call ScenariosCall Scenarios

• When calling the PSTN – The call can be encrypted between the phone and the MX

• When calling another ZIP phone and the call goes to Voicemail – This call can be encrypted. The saved voicemail will be recorded unencrypted.

• When calling the PSTN and recording the call – This is a feature that is currently not enabled.

• When calling through an ITSP – These calls cannot be encrypted as the MX will not terminate the RTP stream (Unless the ITSP uses an MX!).

• When a call goes over ALG to an ITSP that is being recorded – This call cannot be encrypted – see above.

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CapacityCapacity

• The total number of calls that can be encrypted phone to phone is unlimited – since it is the phones that are doing the encryption / decryption process.

• The total number of simultaneous calls that can be encrypted to the PSTN is 60 on an MX250 and 10 on an MX30.