[AC Question]

Our company has a lot of sub offices around the country that have their land line numbers and/or fax numbers in addition to mobile phone numbers used by the employees. What is the best way to create a "downloadable" contact list to use with a custom made or otherwise an existing application in a manner that will simplify the usage of this contact list while at the same time enabling all the employees of the company to download it and use it? Please note that it is preferred to have a dedicated application to this contact list in a sense that it has only our company's contacts listed and not the personal contacts of the device owner.