Glossary
GL-20
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
speech detection
Determining the presence or absence of speech for Digital Speech Interpolation. Performed in either
the CDP card.
split clock
A data clocking configuration where the timing for the transmit data is obtained from one source (such
as a user device) and the timing for the receive data is obtained from another source (such as a switch).
SSAR
segmentation and reassembly.
The process of breaking a dataframe containing data from a number of virtual paths or circuits apart
so that the individual paths/circuits can be switched by reassembling the data into a new frame with a
different sequence.
status enquiry
A message transmitted by a FR NNI port requesting an updated status from the attached foreign
network. This message is used as a heartbeat to detect when a port has failed.
StrataBus
On the BPX switch, contains crosspoint wiring used to carry ATM trunk data between both the
network interface and service interface modules and the crosspoint switch as well as providing
control, clock, and communications.
subrate data
Multiple low-speed data circuits carried in a single DS0 timeslot.
superrate data
Single high-speed data circuit carried in multiple DS0 timeslots.
sustainable cell rate
See
SCR.
SVC
switched virtual circuit.
A virtual circuit that is dynamically established on demand and torn down when transmission is
complete. SVS do not need to reserve any network resources when they are not in use. Called a
switched virtual connection in ATM terminology. Compare with PVC.
switched virtual
circuit
See
SVC.
synchronous data
interface
See
SDI.
synchronous data
PAD
See
SDP.
system clock
module
See
SCM.
T
T1
The standard US. multiplexed 24-channel voice/data digital span line. Operates at a data rate of
1.544 Mbps.
T3
Transmission service at DS3 rate of 44.736 Mbps.
TBE
transient buffer exposure.
The negotiated number of cells that the network would prefer to limit the source to send during the
start-up period.
Содержание BPX 8650
Страница 49: ...P A R T 1 The BPX Switch ...
Страница 50: ......
Страница 159: ...P A R T 2 Installation ...
Страница 160: ......
Страница 273: ...P A R T 3 Initial Configuration and Network Management ...
Страница 274: ......
Страница 311: ...P A R T 4 Configuring Connections ...
Страница 312: ......
Страница 487: ...P A R T 5 Troubleshooting and Maintenance ...
Страница 488: ......
Страница 533: ...P A R T 6 BPX Specifications ...
Страница 534: ......
Страница 555: ...P A R T 7 Appendices ...
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