Which of the following is not a feature of the IP Phone 7900 Series phones? [Single Selection].
What are the points of TE40/TE50 series terminal boot that Cisco's series terminals will not be able to cope with? () [Multiple choice].
The following statement about the reliability of U1981 is correct [multiple choice].
Black and white lists can be defined on H.323/SIP Server to restrict illegal registrations and ensure system security. [Single Selection].