Ascend Tunnel Management Protocol. Layer 3 tunneling protocol, developed by Ascend Communications, Inc., that performs IP encapsulation at the communications server, thus allowing remote users to connect into their networks over the Internet. (Compare with Mobile IP.).

See Ascend Tunnel Management Protocol.

On a buoy report, the air temperature (Celsius).

The ATMP is a multi-platform multi-format module player with old-school visualizations.