Handling the Digit Zero in Cisco Unity Connection

E.

When user dials "0", by default Unity Connection treats it as an operator call and does not block "0" by any restriction table configuration.

Only the operator can modify transfer extension associated with operator call.

Cisco Unity Connection is a voicemail and unified messaging platform that enables users to manage voice messages, email messages, and faxes from a single interface. Unity Connection provides various restriction tables to control user access to certain features, such as out-dialing and transferring calls.

In the context of the predefined restriction tables in Cisco Unity Connection, the digit zero is typically treated as a special case because it is often used as a prefix for certain calling features, such as external access codes and operator assistance.

Option A states that zero is listed in the Default Out-Dial Restriction table. This table controls the numbers that users are allowed to dial from their voicemail boxes. By default, this table allows users to dial local and long-distance numbers, but restricts international and toll-free numbers. However, the table does not specifically mention the digit zero, so option A is incorrect.

Option B states that zero is listed in the Default System Transfer Restriction table. This table controls the numbers that users are allowed to transfer calls to within the Unity Connection system. By default, this table allows users to transfer calls to any valid extension or directory number, but restricts transfers to system extensions and auto-attendants. However, the table does not specifically mention the digit zero, so option B is also incorrect.

Option C states that zero is listed in the Default Transfer Restriction table. This table controls the numbers that users are allowed to transfer calls to outside the Unity Connection system, such as external phone numbers. By default, this table restricts all transfers to external numbers, but allows users to enter an access code (such as the digit zero) to override the restriction. Therefore, option C is the correct answer.

Option D states that zero is listed in the User-Defined and Automatically Added Alternate Extensions Restriction table. This table controls the numbers that users are allowed to associate with their voicemail boxes as alternate extensions. However, this table does not specifically mention the digit zero, so option D is incorrect.

Option E states that zero is not listed in any default restriction table configuration. However, as explained above, the digit zero is listed in the Default Transfer Restriction table, so option E is also incorrect.

In summary, the correct answer is option C: "Zero is listed in the Default Transfer Restriction table."