Configuring Security Features
219
Far Near
Compulsory
Optional
Disabled
Compulsory
Encrypted Call
H.235 Call
Fail to establish call
Optional
H.235 Call
H.235 Call
Unencrypted Call
Disabled
Fail to establish a call
RTP Call
RTP Call
When H.235 is enabled on both endpoints, calls will be encrypted, and the lock icon
appears on the display device of each endpoint during a call..
To configure H.235 via web user interface:
1.
Click
on Account->H323.
2.
Select the desired value from the pull-down list of H.235 Encryption.
3.
Click Confirm to accept the change.
VoIP phones often suffer from network attacks in public network, which results in
communication failure. To ensure the safety of the enterprise VoIP phone, you can
configure abnormal call answering feature for handling abnormal calls using the SIP
protocol. For abnormal calls using the H.323 protocol, you can configure safe mode call
feature to handle them.
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