Deploying VoIP in a small and medium business does not just replace the existing phone system; it adds more features, quality and fluidity to the company. A VoIP system and a traditional phone system just cannot be compared. When a business is looking to expand their existing telephone system to meet growth, scaling up can be an expensive process. Fixed-line PBXs have limits as to how many numbers or extensions you could have. With a VoIP system, such restrictions are a thing of the past. Unlimited phone numbers and extensions can be created within an office environment much more easily and therefore less expensively than with its traditional counterpart. Since VoIP is data-based, the technology is naturally more flexible than traditional telephony, and offers a vast array of features, mostly for free, that would previously stack up on your traditional phone bill. VoIP software can offer much more than the traditional extras offered by telephony providers, such as IVR and other rather innovative ways to integrate software with voice.