Veracity TIMENET GPS MASTER NTP TIME SERVER inc ANTENNA+PSU (VTN-TN)

Yes, this will sync your company's time to the GPS atomic clock. And yes the antenna will work if it's placed in an office window with a view of the horizon. The sync time, especially at first, can take a few hours, but eventually it figures out the location and starts serving up time requests. Very pleased with this little unit, especially given the price.