To redirect calls from the phone extension for user A to the voicemail greeting, which call routing rule should be used in Cisco Unity Connection?

An end user opened a ticket, stating that though he can log in to Jabber for Windows, and presence and chat works, he cannot place phone calls using the desktop client. You investigate the user and find that no phone device is associated with the user account in Cisco Unified Communications Manager. Which device type must you create for this user to enable calling services from the Jabber for Windows desktop client?

An engineer is configuring Cisco Unity Connection to provide messaging services and needs to designate a set of phone numbers to be used for transferring calls within the organization to prevent toll fraud. Which mechanism in Cisco Unity Connection should be modified to accomplish this goal?

Refer to the exhibit.

User A tries to log in to the Cisco Jabber client, the login works fine, but the user cannot see their self-presence or other users' presence in their contact list. The administrator checks the Cisco IM and Presence Server logs and sees an issue. What is the issue, and how does it get resolved?

A Cisco Unified IM and Presence version 11.5.1 on-premises deployment of instant messaging with a capacity of 50,000 users includes the multiple device messaging feature. Each of the 30,000 users has 3 Jabber clients. The customer reports that messages are not being received on all 3 clients. What should the administrator do to resolve this issue?