Transition Networks DataBand EV User Manual page 36

36 DataBand E V User Manual
used so that multiple calls cannot be mixed-up when being processed.
Time to Liv e A limit set on a packet for how many times it should be routed through a device towards its destination
before being discarded.
Timeslot A single 64kbps division of a larger E1 or T1 trunk.
Timing Another word for Clocking. See Clock.
Tone An audible frequency presented to a user in ISDN telephony. Different frequencies of tone are used to
indicate different call states, e.g. Dial Tone, Ringing Tone, Busy Tone.
ToS Type of Service. A bit (code point) which can be set in IP packets which can be used to prioritise traffic.
Trace Patapsco devices have a number of different Trace tools. These allow statistics about the operation of the
device.
Trace Route A tool used to monitor how many times an IP/Ethernet packet is routed (Hops) between two endpoints.
TTL See Time to Live.
Tx Transmit.
UDP User Datagram Protocol. A common packet protocol used in communications over Packet Switched
Networks. Better suited to time-sensitive applications.
Unicast A packet sent from one device to another single device.
VLAN Virtual Local Area Network. A LAN which can be created spanning different network segments, used to
prioritise traffic and speed up communications.
W AN Wide Area Network. A large network composed of many smaller segments, covering a large amount of
devices and users. The Public Internet is a good example of a WAN.
W ildcard Used in Patapsco Call Routing Profiles. Wildcards are used to activate special features within profiles, such
as denoting a single digit of any value (the ? Wildcard).
© 2012 Patapsco Designs Ltd