Cisco BPX 8600 Series, Руководство по установке и настройке

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Glossary
11
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
G
gateway A node configured to handle both T1 and E1 packet and circuit lines for direct interface international
circuits.
GCRA (Generic Cell
Rate Algorithm)
GCRA is a “continuous leaky-bucket” process that monitors the cell depth in the input queue for each
PVC to determine whether to admit a new cell to the network without setting the Cell Loss Priority bit.
global addressing A frame relay addressing convention that uses the DLCI to identify a specific end device somewhere
else in the frame relay network. In a global addressing scheme, the DLCI is a unique number for each
port in the network.
grouped
connections Frame relay connections grouping a number of ports onto one permanent virtual circuit. Similar to
bundled connections except the grouped connections do not have to be contiguous, nor do they all
have to be added simultaneously.
H
HDB3 (High Density
Bipolar Three)
A line interface for E1, similar to B8ZS for T1, which eliminates patterns with eight or more
consecutive zeros. Allows for 64 Kbps clear channel operation and still assure the ones density
required on the E1 line.
HDP (High Speed
Data PAD)
An IGX front card that supports one to four medium speed, synchronous data channels.
I
IGX Switch
A multi-service, multi-band ATM cell relay network switch for private and public networks.
Intelligent Network
Server (INS)
INS is the broad name for a range of products that enhance traditional Cisco WAN switching
networks. These products include Dial-Up Frame Relay, Voice Network Switching, and ATM
Switched Virtual Circuits.
interleaved EIA
Same as “Fast EIA”.
ISDN (Integrated
Services Digital
Network)
A service provided by the telephone company or OCC that supports combined customer voice and
data connections over the twisted pair subscriber loop. Requires special equipment at the customer
premise and a connecting central office switch that is capable of providing ISDN.
IPX Switch
A narrowband cell relay network switch from for private and public networks.
J
J1
A. multiplexed 24-channel circuit line to a PBX conforming to the Japanese TTC-JJ-20 circuit
standard. Similar to E1, it operates at 2.048 Mbps.