Glossary
Glossary-5
bps
Bits per second. A unit for measuring the data rate.
BRI
Basic Rate Interface. An ISDN interface that consists of two 64Kbps
B channels for voice or data and one 16Kbps D channel for signaling. Compare
PRI
.
broadcast address
A special address reserved for sending a message to all stations. Generally, a broadcast
address is a media access control (MAC) destination address of all 1s (ones).
broadcast packets
Packets that are sent to all network nodes.
C
callback
A port configuration allowing the PortMaster to call back dial-in users before providing
access. Callback provides an extra layer of security and can simplify telephone charges.
CCITT
Consultative Committee for International Telegraph and Telephone. International
organization formerly responsible for the development of communications standards.
Now called the ITU-T. See also
ITU-T
.
CD
Carrier Detect. A signal that indicates whether an interface is active. Also, a signal
generated by a modem indicating that a call has been connected.
Challenge Handshake Authentication Protocol
See
CHAP
.
channelized T1
An access link operating at 1.544Mbps that is subdivided into 24 channels of 56Kbps each
for dial-in use.
channel service unit
See
CSU
.
Summary of Contents for PortMaster
Page 16: ...Contents xvi Configuration Guide for PortMaster Products...
Page 26: ...Subscribing to PortMaster Mailing Lists xxvi PortMaster Configuration Guide...
Page 32: ...Basic Configuration Steps 1 6 PortMaster Configuration Guide...
Page 114: ...Configuring WAN Port Settings 6 12 PortMaster Configuration Guide...
Page 128: ...Configuring Login Users 7 14 PortMaster Configuration Guide...
Page 158: ...Restricting User Access 9 16 PortMaster Configuration Guide...
Page 168: ...Configuring Ports for Modem Use 10 10 PortMaster Configuration Guide...
Page 222: ...Frame Relay Subinterfaces 13 16 PortMaster Configuration Guide...
Page 236: ...Troubleshooting a Synchronous V 25bis Connection 14 14 PortMaster Configuration Guide...
Page 252: ...Using ISDN for On Demand Connections 15 16 PortMaster Configuration Guide...
Page 264: ...Using ISDN for Internet Connections 16 12 PortMaster Configuration Guide...
Page 276: ...Configuration Steps for Dial In Access 17 12 PortMaster Configuration Guide...
Page 286: ...Configuration Steps for Shared Device Access 18 10 PortMaster Configuration Guide...
Page 296: ...Troubleshooting a Leased Line Connection 19 10 PortMaster Configuration Guide...
Page 310: ...B 4 PortMaster Configuration Guide...
Page 352: ...Command Index Command Index 6 PortMaster Configuration Guide...