Installation guide

Glossary
GL-26
Cisco 6260 Hardware Installation Guide
OL-2365-02
subtended node
chassis
Downstream chassis in a subtended network configuration. Also known as the child.
subtending
See subtended configuration.
subtending host
chassis
Provides the data network interface for the subtended node chassis and connects to the ATM
backbone. Also known as the parent.
SVC
switched virtual circuit (or connection). A virtual circuit that is dynamically established on demand
and is torn down when transmission is complete. SVCs are used in situations where data transmission
is sporadic. Compare with PVC. See also virtual circuit.
switch
Network device that filters, forwards, and floods frames based on the destination address of each
frame. The switch operates at the data link layer of the OSI model. See also bridge and router.
switched virtual
circuit
See SVC.
symmetric high bit
rate digital
subscriber loop
See SHDSL.
symmetrical digital
subscriber line
See SDSL.
synchronous
communications
Data is not sent in individual bytes, but as frames of large data blocks.
Synchronous
Optical Network
See SONET.
Synchronous
Transfer Module 1
See STM-1.
Synchronous
Transport Signal
level 3,
concatenated
See STS-3c.
SYSLOG
SYSLOG allows you to log significant system information to a remote server.
T
T1
A digital carrier that is used to transmit a DS1 formatted digital signal at 1.544 Mbps through the
telephone-switching network. See also E1.
T1.413
The ANSI standard for line coding and framing for full rate ADSL.
T3
A digital carrier that is used to transmit a DS3 formatted digital signal at 45 Mbps through the
telephone-switching network. Compare with E3. See also DS3.