|
|
|
Radio terminology that defines a call as beginning at the moment that you press the transmit key and concluding when you release the transmit key. The term “per call” implies that some form of control causes the radio to select a specific frequency before it transmits audio. Some radios may be configured to automatically return to a predefined RF channel when the call ends.
|
|
The delay that occurs when there is no idle channel or facility available to immediately process a call that arrives at an automatic switching device.
|
|
The time that is required to establish a circuit-switched call between users or terminals.
|
|
A wave that is suitable for modulation by an information-bearing signal.
|
|
channel associated signaling. The transmission of signaling information within the voice channel. CAS signaling often is referred to as robbed-bit signaling because user bandwidth is being robbed by the network for other purposes.
|
|
A communication path that is wide enough to permit a single RF transmission. Multiple channels can be multiplexed over a single cable in certain environments. There are many different types of channels in Cisco IPICS, including direct dial, 2-way, VTGs, and radio channels. Channels can be dynamically or statically allocated. Channels may have one or more channel connections that define the source for the channel. See PTT channel.
|
|
The maximum possible information transfer rate through a channel, subject to specified constraints.
|
|
One or more methods by which a content stream can be obtained. For instance, a particular channel may be found on several different multicast addresses in different locations and also on several different radios at different locations.
|
|
A logical grouping of channels
|
|
The distance from the center of one channel to the center of the next-adjacent-channel. Typically measured in kilohertz.
|
Cisco Unified Communications Manager (CallManager)
|
The software-based call-processing component of the Cisco IP telephony solution. Cisco Unified Communications Manager (CallManager) extends enterprise telephony features and functions to packet telephony network devices, such as Cisco Unified IP Phones, media processing devices, VoIP gateways, and multimedia applications.
|
|
Cisco IP Interoperability and Collaboration System. The Cisco IPICS system provides an IP standards-based solution for voice interoperability by interconnecting voice channels, talk groups, and VTGs to bridge communications amongst disparate systems.
|
Cisco IPICS policy engine
|
Integrated with the Cisco IPICS server, this component enables telephony dial functionality and is responsible for the management and execution of policies and user notifications.
|
|
Provides the core functionality of the Cisco IPICS system. The Cisco IPICS server software runs on the Linux operating system on selected performs. The server software includes an incident management framework administration GUI that enables dynamic resource management for users, channels, and VTGs. The server also includes the Cisco IPICS policy engine, which enables telephony dial functionality and is responsible for the management and execution of policies and user notifications.
|
|
A full-featured telephone that provides voice communication over an IP network. A user can participate in a PTT channel or VTG by using a Cisco Unified IP Phone as a PTT device.
|
|
command-line interface. An interface that allows the user to interact with the operating system by entering commands and optional arguments.
|
|
1. Integrated circuit device that typically uses pulse code modulation to transform analog signals into a digital bit stream and digital signals back into analog signals.
2. In Voice over IP, Voice over Frame Relay, and Voice over ATM, a DSP software algorithm that is used to compress/decompress speech or audio signals.
|
conference of conferences
|
A conference that consists of two or more VTGs.
|
conventional radio system
|
A non-trunked system that is similar to telephone party-line in that the user determines availability by listening for an open channel.
|
|
carrier operated relay. An electrical signal that is used to signal when a radio is receiving traffic.
|
|
In radio communications, the geographical area that is within the range of, or that is covered by, a wireless radio system to enable service for radio communications. Also referred to as service delivery area.
|