
Glossary 433
P0911588 Issue 01 Enterprise Edge Programming Operations Guide
TOS
See Type of Service.
Transfer
A feature that lets you redirect a call to another telephone in your Enterprise Edge
system, over a network or outside your system.
Transfer Callback
If a transferred call is not answered after a specific number of rings, the call will
return to the telephone that madethe transfer. The number of rings is assignedunder
Feature settings in System programming. Transfer Callback does not apply to calls
transferred externally.
Transmission Control Protocol/Internet Protocol (TCP/IP)
A language governing communication among all computers on the Internet.
TCP protocol checks packets of information for errors, submits requests for re-
transmission in the event of errors and returns multiple packets of a message into
the proper original sequence when the message reaches its destination.
IP dictates how packets are sent out over networks and has a packet addressing
method that lets any computer on the Internet forward a packet to any other
computer that is a step or more closer to the packet’s recipient.
Trunk
The physical connection between the Enterprise Edge system and the outside world
using either the public telephone system or a private network.
Trunk Answer
A feature you can use to answer a call on any line that has an active Ringing service
Service Mode, even if that line does not appear on your telephone. Trunk Answer
is enabled in Services programming.
Trunk Media Bay Module
A computer module which provides access to telecommunications trunks. The
Digital Trunk Media Bay Module (EE-DTM) provides the connection between a
standard digital PSTN T1 or PRI line and the Enterprise Edge system. The Caller
ID Trunk Media Bay Module (EE-CTM) provides the ability to access four analog
Caller ID PSTN lines.
Type of Service (TOS)
The TOS field is located in the IP packet header and is used in DiffServ processing.
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