Specifications

Table Of Contents
Glossary
18
Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
tip and ring
The two sides of a telephone circuit. The names come from old telephone switch board plugs: the tip wire was connected to
the tip of the plug, and the ring wire was connected to the ring at the base of the plug.
topology
Physical arrangement of network nodes and media within an enterprise networking structure.
traffic
Calls being sent and received over a communications network.
transmission (XMISSION) (XMIT)
The electrical transfer of a signal, message, or other form of data from one location to another, with acceptable loss of content
due to attenuation, distortion, or noise.
trunk
A communication channel between two Switching Systems.
TTY line
These are asynchronous lines on the router. TTY is a line configuration, not an interface configuration. These lines correspond
to async interfaces that are configured separately.
V
V.120
Dedicated PPP Dial-in.
virtual profiles
Virtual Profiles is a unique Point-to-Point application that can create and configure a virtual access interface dynamically when
a dial-in call is received, and tear down the interface dynamically when the call ends.
virtual template
Virutal Templates are used for cloning virtual-access interfaces for inbound calls.
voiceband channel
A transmission channel with a nominal 4 kHz bandwidth, suitable for voice transmission. If sampled at an 8 kHz sampling rate
with 8 bit/sample, it becomes a 64 kbit/s data stream.
voice over IP (VoIP)
A technology used to transport voice traffic over the Internet using the existing IP network infrastructure.
VPDN
Virtual Private Dialup Network. The forwarding of PPP links from an Internet Service Provider (ISP) to a home gateway. L2TP
and L2F are common options for tunneling protocol.