## 25.6.2 CRC Cards for the Voice Mail System (cont.)

### Retrieve Messages use case

First few steps same as preceding.

1. User types passcode
   - `Telephone` notifies `Connection`
2. `Connection` asks `Mailbox` to check passcode
   - Add "manage passcode" responsibility to `Mailbox`
3. If passcode valid:
   - `Connection` sets the `Mailbox` as current
   - asks `Telephone` to speak mailbox menu

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