coexist in the same location?
Yes they can, and there will not be any interference. The GN9300e series operate in different frequency bands than WiFi equipment/Wireless LANs. In North America, the GN9300e series utilize the newly opened DECT frequency band (1920-1930 MHz), while other countries have the DECT band at 18801900 MHz. These DECT bands are not used for WiFi equipment, Wireless LANs etc., as they typically operate in the 2.4 GHz or 5 GHz frequency bands.