Nortel BCM 3.7 Manual page 933

TCP checks packets of information for errors, sends requests for re-transmission in the
event of errors and returns multiple packets of a message into the original sequence when
the message reaches its destination.
IP controls how packets are sent out over networks and has a packet addressing method
that lets any computer on the Internet forward a packet to another computer that is a step
or more nearer to the packet target.
TEI
A Terminal Endpoint Identifier (TEI) is a digit used to identify devices using an ISDN
connection for D-channel packet service.
Telephony Application Program Interface
See TAPI.
Telnet
Telnet is a service that provides terminal-emulation capabilities for logging into the
Business Communications Manager unit from a remote location. See also, SSL.
Terminal Endpoint Identifiers
See TEI.
token-ring
A token-ring is a network topology and data signaling scheme where a special data packet
(called a token) is passed from one station to another along an electrical ring. A
transmitting station takes possession of the token, transmits the data, then frees the token
after the data has made a complete circuit of the electrical ring.
tone dial telephone
A push button telephone that emits DTMF tones.
TOS
The type of service field is located in the IP packet header and is used in DiffServ
processing.
transfer
A feature that allows you to redirect a call to another telephone in your Business
Communications Manager system, over a network or outside your system. (FEATURE 3)
transfer callback
If a transferred call is not answered after a specific number of rings, the call returns to the
telephone that made the transfer. Transfer Callback does not apply to calls transferred
externally. The number of rings is assigned under Timers, Transfer callback timeout.
(Services, Telephony Services, General Settings)
Transmission Control Protocol/Internet Protocol
See TCP/IP
Programming Operations Guide
T 933