11.0 Glossary

Acknowledgment
An acknowledgment is a short reply from the NE indicating that an input command message is being acted upon or has been immediately rejected. The essential purpose of an acknowledgment is to assure a user that a command that takes a long time to execute has been received by the NE.

AID - Access Identifier
AID is one of the blocks in the Staging Parameter Block of an input message .The Access IDentifier (AID) block normally consists of one or more parameters that uniquely identify the entity, within the target NE, to be acted upon by the input message.

ATAG  - Autonomous Tag
ATAG is one of parameter in an  autonomous message . It is assigned by the NE, must be sequential, and must be included in all autonomously generated messages. It allows an OS to correlate spontaneous outputs triggered by a common problem and also to identify whether the OS has failed to receive any output.

Autonomous message
An autonomous message is an unsolicited message  from the NE to the appropriate OS for reporting any event occurred in an NE.

Circuit
A circuit is a connection  between two points   used to provide a service to the  customer.

CLEC  - Competitive  Local Exchange Carrier
A business authorized by the Telecommunications Act of 1996 that can deliver alternative dial-tone and other services using an incumbent carrier's equipment.

CLEI  -  Common Language Equipment Identifier.
Common Language Equipment Identifier, unique code assigned by Bellcore for label on each  telecom device.

CTAG - Correlation Tag
CTAG  is one of the blocks in the Staging Parameter Block of an input message .It contains one position defined parameter to serve as a means of correlating an input command with its associated output response.

Delayed Activation
Delay Activation is one of the features available in TL1. Delay Activation is a function whereby an input message may be stored in a Message
Pending buffer at the NE for final execution at some later time, either automatically or by a subsequent message from the OS.

Digital Cross Connect(DCS)
Digital cross connect or DCS is a device that  switches channel  between two or more transmission facilities.The types of network cross connections managed by a DCS can range from  STSx to   DSx.

DS-N
Digital signal-N   is a term for the series of standard digital transmission rate. DS-0=64kbps, DS-1=T-1=1.544 mpbs.

Facility
A facility is a transmission line or path. For example, STS1 is a facility.

GNE  - Gateway NE
It is the NE that routes the input message from the manager to the appropriate NE.

ILEC       - Incumbent Local Exchange Carrier
The companies that were in business before the CLECs.  The highest-visibility ILECs are the regional Bell operating companies, or RBOCs.

Input message
An input command message is a message from an OS or other source to an NE. The  message requests the NE to perform some operations-related action.

NE  - Network  Element
It is an equipment(node)  in the network. For example, ADM (Add Drop Multiplexer ) is an NE.

OC-N
Optical Carrier, Level-N  in SONET. OC-1 = 51.84 mpbs.

OSMINE  - Operations System Modifications for the Integration of Network Element.
OSMINE Services is the integration process, which makes Telcordia OSSs and equipment providers Network Elements (NEs)  compatible. The services provide NEs supported in various Telcordia OSSs, which are operational in service provider's networks .

OSS - Operations Support System
Operations  Support System is a network  management system used by telecom service provider o to provision, monitor, and maintain facilities.

Output response
An output response message is a detailed reply (or set of replies) to an input command message. It contains information indicating whether the
command was executed successfully and any data needs to be returned to the OS/user.

RBOC - Regional Bell Operating Company
The regional telephone companies that resulted from the break-up of AT&T. Eighty  percent of North American service providers are RBOC.

SONET    -  Synchronous Optical Network
A set of standards for optical transport.

STS -N
Synchronous Transport Signal, level N; electrical equivalent of OC-N. STS-1= 51.84 mbps.

TID  - Target Identifier
TID is one of component in input message. It identifies the NE to which message to be routed. Gateway NE will make use of TID to route TL1 messages.

TL1 – Transaction Language -1
Transaction Language 1 (TL1) is an ASCII or man-machine  management protocol  used for managing Telecommunication networks. It is defined by Telcordia (previously known as Bellcore).

T-N
The T-carrier system is digital, using pulse code modulation and time-division multiplexing introduced by  Bell Systems.
T-1 = 1.544 mpbs  , T-3=44.736 mpbs.