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Glossary
This glossary contains terms specific to the DM3 Configuration File Reference.
Section of the CONFIG files that defines parameters relating to data received from the network. The parameters associated with this section have parameter numbers that start with 0x1b and only apply to IPLink technologies.
Section of the CONFIG file that defines parameters relating to conferencing.
A T-1 protocol switch primarily used for switching digital voice, but it also supports ISDN protocols.
A T-1 protocol switch used for switching digital voice and data channels, and supports both basic rate and primary rate ISDN.
Automatic Gain Control is an encoding process that attempts to maintain a constant volume during voice recording.
Alternate mark inversion is a form of bipolar signaling in which each successive mark is of the opposite polarity and spaces have zero amplitude.
The protocol implemented by the CHP component. Protocol variants are derived from this base. Compare with protocol variant.
An ISDN bearer channel that carries voice, fax and compressed video.
Channel Associated Signaling is the DM3 component responsible for managing the generation and detection of digital line signaling functions required to manage voice channels. Channel Associated Signaling also applies to a signaling method in which the signaling for that channel is directly associated with the channel.
Common Channel Signaling is the DM3 component that applies to technologies such as ISDN that use common channel signaling. Common Channel Signaling also applies, in general, to a signaling method in which the signaling for a group of channels is carried on a separate (common) channel.
Country Dependent Parameters file defining parameters necessary for configuring products to different country requirements. This file has a .cdp extension.
European Conference of Postal and Telecommunications Administrations. A group of European countries organized for the purpose of setting telecommunications standards in Europe.
Channel Protocol is the DM3 component responsible for implementing the telephony communication protocol that is used on each network interface.
A signaling configuration where none of the line's bandwidth is used for signaling. Clear channel signaling is the ability to access telephony channels in the system and configure them to a user defined call control protocol, or to simply leave the lines 'clear'. The resources should have access to the telephony bus for media routing purposes, as well as signal detection, signal generation, and tone generation capabilities, if desired. NFAS is an example of clear channel signaling.
A collection of DM3 component instances that share specific TDM time slots on the network interface or the SCbus, and which therefore operate on the same media stream data. The cluster concept in the DM3 architecture corresponds generally but not exactly to the concept of a "group" in S.100 or to a "channel" in conventional Dialogic architectural terminology. Component instances are bound to a particular cluster and its assigned time slots in an allocation operation.
A text-input configuration file containing component-specific parameters. This file has a .config extension and is used to create an FCD file.
A set of files associated with a specific board configuration. All the files in the set have the same name, but different extensions. The set includes the CONFIG, FCD, and PCD files.
An ISDN channel that carries signaling information.
A T-1 protocol switch that supports T-1 robbed bit signaling and provides D4 framing, but does not support ISDN protocols.
Dialogic Configuration Manager - a software program that allows you to configure system-level and certain board-level parameters. (Windows only).
An architecture on which a whole set of Dialogic products are built. The DM3 architecture is open, layered, and flexible, encompassing hardware as well as software components.
A T-1 protocol switch (DMS-100) for primary rate ISDN applications.
Two-way telephony signaling that uses an "E" (far end) lead and an "M" (near-end) lead. Signaling is accomplished by applying -48 volts dc to the leads.
The DM3 component responsible for performing an encoding process on a media stream.
Feature Configuration Description file that lists any non-default parameter settings that are necessary to configure a DM3 hardware/firmware product for a particular feature set. This file has a .fcd extension.
A command-line application that enables you to generate an FCD file from a base CONFIG file.
Feature Configuration Description
A routing configuration where the resource devices (voice/fax) and network interface devices are permanently coupled together in a fixed configuration. Only the network interface time slot device has access to the CT Bus
While the phone is off-hook, quickly pressing and releasing the flash hook to signal the central office or PBX that you are requesting special processing, for example, call waiting.
The plunger the phone's handset rests on while on-hook.
A routing configuration where the resource devices (voice/fax) and network interface devices are independent, which allows exporting and sharing of the resources. All resources have access to the CT Bus.
Foreign Exchange Office - a device at a central site that permits extending PBX services to remote sites. The FXO emulates a phone to the PBX.
Foreign Exchange Station - a device located remotely from a PBX that permits extending PBX services to remote sites. The FXS emulates a PBX to the remote phone.
A two-way, two-wire (tip and ring) signaling method similar to loop start in which the current flows in a circuit. Ground start is normally between a PBX and central office and seizure of the line is accomplished by momentarily grounding one of the circuit wires, usually the ring of the tip and ring circuit.
A modified AMI signaling code that only applies to E-1 and is used to preserve one's density on the line.
high density bipolar three zero
A signaling scheme where both the data and the signaling information for the data are carried over the same channels.
A component instance is an addressable unit within the DM3 software architecture; it represents a single thread of control. The DM3 system resource management and messaging services operate at the instance level. A set of component instances that make up a resource instance communicate with one another using the DM3 system messaging services. A set of component instances is usually associated with a channel of call processing.
Integrated Services Digital Network. See primary rate ISDN.
Link Access Protocol for the D channel.
Physical layer of the OSI model that address the physical aspects of network access.
Data Link layer of the OSI model that address data transfer and routing.
Network layer of the OSI model that addresses line communication procedures.
Line Administration component responsible for managing line devices.
A two-way, two-wire (tip and ring) signaling method in which the current used for signaling flows in a circuit (loop) between a telephone and PBX or a telephone and central office. Seizure of the line is accomplished by going off-hook which causes current to flow in a circuit (loop).
Pre-defined, numbered sets of features supported by certain DM3 boards.
An E-1 protocol switch. Net5 is a European ISDN primary rate switch.
Non-Facility-Associated Signaling is a form of out-of-band signaling where a single ISDN primary rate D channel provides signaling and control for up to 10 ISDN primary rate lines.
National ISDN-2. A U.S. standard software interface that can be installed on most switch types, providing maximum inter operability with ISDN lines.
A T-1 protocol switch (INS-Net 1500) that is used by Nippon Telephone and Telegraph (NTT) for primary rate ISDN.
The signaling state that occurs when a handset is sitting on the phone (the phone's inactive state) and the flash hook is depressed. Compare with off-hook.
The signaling state that occurs when the handset is removed from the phone and the flash hook is released. When a phone is taken off-hook it signals the central office or PBX that it needs attention, for example, to make a call or to answering an incoming call. Compare with on-hook.
Open Standards Interconnections. ISO-developed open standards-based framework for inter-system communications. The OSI model categorizes the communication process into seven layers. Layers 1 to 4 address network access and Layers 5 to 7 address messaging.
A signaling scheme where the signaling is carried over channels separate from the channels carrying the data.
Positive answering machine detection.
Product Configuration Description file that contains product or platform configuration description information. This file has a .pcd extension.
A command-line application that enables you to download and configure PDK protocols on QuadSpan and DualSpan boards. These protocols are configured separately from the board-level parameters defined in the CONFIG file and are downloaded after system initialization.
A logical entity that represents the point at which PCM data can flow into or out of a component instance or interface in a cluster. The port abstraction provides a high-level means of defining potential data flow paths within clusters and controlling the actual data flow using simple protocols. Ports are classified and designated in terms of data flow direction and the type of entity that provides the port.
the D channel that provides the signaling and control in an NFAS configuration.
An application that uses a single channel to carrie the signaling for all other channels on a line. On a T-1 line, the application uses channels 1 through 23 (B channels) to carry data, digital voice, and compressed video. Channel 24 (D channel) carries the signaling for all 23 B channels. On an E-1 line, the application uses channels 1 through 15 and 17 through 31 (B channels) to carry data, digital voice, and compressed video. Channel 16 (D channel) carries the signaling for all 30 B channels.
Product Configuration Description
A version of the base protocol that has been customized by a set of parameters. This parameter set configures a CHP component to support a particular T-1 telephony protocol. Features such as wink start, DTMF DNIS and MF ANI are enabled and tuned by the parameters in a protocol variant. Compare with base protocol.
A temporary state change from the current signal state to a new signaling state, and then back to the original signaling state. Compare with sequence, train and transition.
Primary rate ISDN D channel signaling protocol standard. (ITU-T Recommendation I.451). The protocol defines the signaling packet, including message type and content, and allows for voice and data transfer on a single trunk.
A T-1 and E-1 protocol switch. QSIG is an ISDN signaling and control protocol used for communications between two or more Private Integrated Network Exchange applications (PSS1). The signaling protocol for this standard is defined by Q.931.
An E-1 protocol switch. R2MF is and inband common channel signaling protocol that uses channel 16 to convey the signaling for the 30 voice channels. This international signaling system is used mostly in Europe and Asia in non-ISDN applications to permit the transmission of numerical and other information relating to the called and calling subscriber lines.
Conversion of digital data into a different transfer speed (rate) and form.
The DM3 component responsible for a resource's message exchanges with the host, as well as media stream management and encoder component control functions.
An alarm generated by the device at the receiving end of a T-1 or E-1 line to report a loss of signal or frame alignment (synchronization) in the signal being received (incoming data).
A DM3 conceptual entity that provides a specific functionality to a host application. A resource contains a well defined interface or message set, which the host application utilizes when accessing the resource.
Resource firmware consists of multiple components that run on top of the DM3 core platform software (which includes the platform-specific DM3 kernel and device driver).
The DM3 GlobalCall resource is an example of such a resource, providing all of the features and functionality necessary for handling calls on the DM3 platform.
System Configuration Description file defining the physical parameters of a platform (Linux only). This file has a .scd extension.
Silence Compressed Record is an encoding process that compresses silence during voice recording.
A set of train signals. Compare with pulse, train and transition.
System Configuration Description
Terminal Endpoint Indentifier. TEI defines which device(s) attached to a BRI ISDN line is communicating with the CO.
A multiplexing scheme in which a number of low speed digital signals are incorporated onto a high speed line in a byte-interleave pattern.
A set of transitions from one signaling state to another in a predefined pattern (set of pulses). Compare with pulses, sequence and transition.
A permanent state change from the current signal state to a new signaling state. Compare with pulse, sequence and train.
An E-1 protocol switch. TS16 is a type of clear channel signaling which allows time slot 16 to be used for data instead of signaling.
Telephony Service Component is the DM3 component responsible for managing the B channel sets.
An alarm generated by the device at the receiving end of a T-1 or E-1 line and sent to the device at the transmitting (remote) end to signify that a red alarm condition exists at the receiving (local) end. The yellow alarm is sent to the transmitting device as long as the red alarm condition exists at the receiving end.
A single pulse used sent from a phone, central office, or PBX as part of protocol hand-shaking.
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