Netopia Router PN Series - Manual (Page 275)

GL-5
Class A, B, and C networks: The values assigned to the first few
bits in an IP network address determine which class designation the
network has. In decimal notation, Class A network addresses range
from 1.X.X.X to 126.X.X.X, Class B network addresses range from
128.1.X.X to 191.254.X.X, and Class C addresses range from
192.0.1.X to 223.255.254.X. For more information on IP network
address classes, see
Appendix C, “Understanding IP Addressing.”
client: An intelligent workstation that makes requests to other
computers known as servers. PC computers on a LAN can be
clients.
clustering: A feature that clusters remapped network numbers into
a range of sequential network numbers.
CNA (Calling Number Authentication): A security feature that will
reject an incoming call if it does not match the Calling Number field
in one of the Netopia ISDN Router’s Connection Profiles.
CND (Calling Number Delivery): Also known as caller ID, a feature
that allows the Called Customer Premises Equipment (CPE) to
receive a calling party’s directory number during the call
establishment phase.
Committed Burst Size (Bc): The maximum amount of data (in bits)
that the network agrees to transfer, under normal conditions, during
a time interval Tc. See also
Excess Burst Size (Be).
Committed Information Rate (CIR): The committed rate (in bits per
second) at which the ingress access inter face trunk inter faces, and
egress access inter face of a frame relay network transfer
information to the destination frame relay end system under normal
conditions. The rate is averaged over a minimum time interval Tc.
Committed Rate Measurement Interval (Tc): The time interval
during which the user can send only a Bc-committed amount of the
traffic. Tc is computed (from the subscription parameters of CIR and
Bc) as Tc = Bc/CIR. Tc is not a periodic time interval. Instead, it is
used only to measure incoming data, during which it acts like a
sliding window. Incoming data triggers the Tc interval, which
continues until it completes its commuted duration. See also
Committed Information Rate (CIR) and Committed Burst Size (Bc).