Nortel VoIP Gateway, Configuration Manual

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Norstar VoIP Gateway Configuration Guide
Glossary
backbone
The major transmission path of a network, handling high-volume, high-density traffic.
bandwidth
A measure of information carrying capacity available for a transmission medium, shown
in bits per second. The greater the bandwidth, the more information sent in a given amount
of time.
bridge
LAN equipment providing interconnection between two networks using the same
addressing structure. A bridge filters out packets that remain on one LAN and forwards
packets for other LANs.
codec
Equipment or circuits that digitally code and decode voice signals. Software that provides
compression/decompression algorithms for voice traffic over IP networks and VoIP trunks.
communications protocol
A set of agreed-upon communications formats and procedures between devices on a data
communication network.
data communications
Processes and equipment used to transport signals from a data processing device at one
location to a data processing device at another location.
enbloc
All dialed digits sent in a single expression. The system waits for all digits to be dialed
before processing the call.
firewalls
Firewalls are server security devices on a network that block or allow IP traffic into node
networks or devices. When configuring IP telephony, you need to ensure that the port
settings are correctly configured to pass IP telephony packets through any network
firewalls between the VoIP Gateway and the other IP telephony endpoint.
full-duplex transmission
Simultaneous two-way separate transmission in both directions.
G.711
A codec that delivers toll quality audio at 64 kbit/s. This codec is best for speech because
it has small delay, and is very resilient to channel errors.