Storage space is a primary concern. Uncompressed recordings take up approximately 1MB per minute of recording. An additional concern is the number of available ports for recording on the Voicemail Pro. Part of this can be alleviated by reserving ports for specific features on the system, and the addition of more ports through licensing. Please make your sales representative aware of these concerns if you choose to move forward with call recording.
An additional item that customers must be aware about is the laws and regulations in your state when it comes to notification of calls being recorded. Some states only require single party notification, where as long as your internal employees are aware that calls may be recorded, then it is fully legal to record outside calls without disclosure. Other states require two party notification. This requires that both parties on the call receive notification that the call is being recorded. This is typically handled through an announcement played for the incoming call notifying them that their call may be recorded, and additional notification to employees.