Six employees in a company have hot-desking enabled, and their calls will be redirected to their voicemail boxes when they log off. The employees want to access their voicemail boxes while they are out of the office.
What is the best way to set up Direct Inward Dialing/Direct Inward Dial (DDI/DID) to achieve this?

A company with 500 users has a single IP Office Server Edition providing telephony, presence and Instant Messaging, UMS, Conferencing, and Mobility support. They are buying a remote company with 400 users. They want to support all the IP Office features for everyone.
To maintain Avaya support, what must be added to their server Edition?

A remote worker with Avaya Windows Communicator visits their office headquarters where the IP Office and one-X Portal are located.
Which two technologies enable the worker to re-register locally? (Choose two.)

Which default short code is used to toggle the modem function on the analog trunk card?

After modifying the IP Office's security settings and creating new user rights, you encounter an error when attempting to save the changes. Why might this be the case?