User Manual

Table Of Contents
Glossary
98-148232-B 120
storage of text messages.
SIP Session Initiation Protocol. An application-layer control (signaling) protocol for creating,
modifying, and terminating sessions with one or more participants. Used e.g. for Internet
telephony.
SMS Short Message Service
T
TE Terminal Equipment - the equipment connected locally to the EXPLORER 540.
U
UTC Coordinated Universal Time. The International Atomic Time (TAI) with leap seconds
added at irregular intervals to compensate for the Earth’s slowing rotation. Leap seconds
are used to allow UTC to closely track UT1, which is mean solar time at the Royal
Observatory, Greenwich.