The BlackBerry MVS Client is not installed.

1. To view applications on the BlackBerry device, on the Home screen, click Options > Applications > Add-on.
2. Verify that the BlackBerry MVS Client appears in the list.

If the BlackBerry MVS Client is not installed, for information about making applications available to users, see the BlackBerry Enterprise Server Administration Guide and the BlackBerry Mobile Voice System Administration Guide.

The user is outside a wireless coverage area.

On the BlackBerry device, verify that the BlackBerry device is in a wireless coverage area where the BlackBerry device can send and receive data messages and the user can use the phone.

The Desktop [BBSIP] service book is not installed.

To view service books on the BlackBerry device, click Options > Advanced Options > Service Book. If the [BBSIP] service book is not available, contact an administrator of the BlackBerry Enterprise Server.

The BlackBerry MVS Services are not running.

On the BlackBerry MVS Server that the user account is associated, in the Windows Services, verify that the MVS Console service, MVS Session Manager service, MVS Data Manager service, MVS BlackBerry Enterprise Server Connector service, and MVS Witness Server service are running. If necessary, start them. Users will not be able to use the BlackBerry MVS while the services are starting.

In BlackBerry Enterprise Server 5.0, the user account is not active.

1. In the BlackBerry Administration Service, on the BlackBerry solution management menu, expand User.
2. Click Manage users.
3. Search for a user account.
4. In the BlackBerry Enterprise Server status list, verify that the Disable as BlackBerry user option is cleared.

The BlackBerry MVS user account is not configured correctly.

1. In the MVS Console, in the left pane, click Users.
2. Click Manage.
3. Click Search.
4. Click the user account that you want to check the credentials for.
5. Verify that the user name, password, extension number, and mobile number match the credentials that are configured in the PBX.

The work number is not set as the active number on the BlackBerry device.

On the BlackBerry device, set the work number as the active number. Try performing the following actions:

1. On the BlackBerry device, open the phone application.
2. Scroll to the top of the call log screen.
3. Click the trackpad.
4. Select the work number.
5. Click the trackpad.

Phone number translation is not configured correctly.

Phone number translation is required if your organization's PBX does not support the E.164 plus sign (+) or does not add the International Direct Dial (IDD) or National Direct Dial (NDD) access codes automatically.

1. In the MVS Console, in the left pane, click Telephony Connectors.
2. Click Manage.
3. Click your organization's PBX.
4. In the Location drop-down list, verify that the selected normalization is correct.

If your organization's users are configured for PBX-initiated calling, the caller identification number of the telephony connector might not be set correctly.

1. In the MVS Console, in the left pane, click Telephony Connectors.
2. Click Manage.
3. Click your organization's telephony connector.
4. Verify that the caller ID number of the telephony connector is correct.

Try performing the following actions:

• In the BlackBerry MVS BBSIP log files, check for a caller ID number of the telephony connector that can be passed from the PBX to the PSTN, to the BlackBerry device. The default location for the log files is <drive>:\Program Files\Research In Motion\BlackBerry Enterprise Server\Logs\<date>. Contact your organization's PBX administrator to verify that the caller ID number is correct.
• In the MVS Console, on the Telephony Connector page, verify that the caller ID number of the telephony connector is correct.

The port numbers are not configured correctly.

Verify that the trunk port number of the PBX is the same as the trunk port number of the MVS FMC Phone.

The organization's route patterns are not configured correctly.

Try performing the following actions:

• If you deactivate user accounts from the MVS Console and then reactivate them, if the BlackBerry MVS prepopulates the mobile number configuration from the BlackBerry Enterprise Server, the BlackBerry MVS might add the national direct dialing prefix to the Mobile Phone Number field on the BlackBerry devices. Users cannot make or receive calls if the wireless network does not permit a prefix for calling local phone numbers, and if the PBX is not configured to permit calls that begin with a prefix from BlackBerry devices. You must configure the route patterns of your organization's PBX to permit calls with or without the national direct dialing prefix from BlackBerry devices.
• You might have to configure your organization's PBX so that BlackBerry MVS users can make calls from the call log or contact list on their BlackBerry devices without adding a prefix, such as the number 9, before the phone numbers.

A "User is not available" message displays on the device.

Verify that the device is using the correct version of the BlackBerry Device Software.

A user is roaming internationally and changes the SIM card to a local mobile number.

In the MVS Console, make sure the "User may change the mobile phone number" Class of Service setting is selected. Manually change the mobile number on the device to reflect what the PBX must dial to contact the user. For example, if the user is using a United Kingdom SIM card, the mobile number on the user's device should be changed to include the IDD (011), the home country code (44), and the user's area code and local phone number. For more information on changing the mobile phone number on the device, visit www.blackberry.com/support to read article KB17940.