Work has also been done on Automatic Transfer Mode (ATM)-over-satellite. Standardization of ATM-over-satellite is underway and several organizations are working in parallel. The ATM Forum s Wireless-ATM (WATM) group has done some work on ATM-over-satellite. The Telecommunications Industries of America (TIA) Communications and Interoperability group (TIA-TR34.1) works on interoperability specifications that facilitate ATM access and ATM network interconnect in both fixed and mobile satellite networks. TIA is collaborating with the ATM-Forum WATM group. The standard development for satellite ATM networks is provided in ATM Forum contribution 98-0828.