Call Accounting Software

CDR -Call Data Record 

is a data record that contains information related to a telephone call, such as the origination and destination of the call, the time the call started and ended, the duration of the call, the time of day the call was made among other details of the call.

CLID - Calling Line Identification

is also known as caller ID. It is where the information of calling party is disclosed.

DIAL AROUND

long distance services that require consumers to dial a long-distance provider’s access code (or "10-10" number) before dialing a long-distance number to bypass or "dial around" the consumer’s chosen long-distance carrier in order to get a better rate.

DID - Direct Inbound Dial

is a feature offered by telephone companies for use with their customers' PBX system, whereby the telephone company (telco) allocates a range of numbers all connected to their customer's PBX. As calls are presented to the PBX, the number that the caller dialed is also given, so the PBX can route the call to the desired person or bureau within the organization

DNIS - Dialed Number Identification Service

is a telephone service that identifies for the receiver of a call the number that the caller dialed. It's a common feature of 800 and 900 lines. If you have multiple 800 or 900 numbers to the same destination, DNIS tells which number was called.

DISA - Direct Inward System Access

The ability to access a PBX from an outside telephone number. For example, a caller might dial an assigned number, input a security code and then use the PBX to place a long distance call.

IP PBX - Internet Protocol - Private Branch Exchange

is a virtual PBX service where the feature serving portion of a PBX system is housed in an off-site carrier hotel with access to the PSTN. At the client premise, an IP handset communicates with the hosted PBX with packetized voice over the public internet.

IP Telephony

A term used largely interchangeably with Voice over IP to describe the transmission of voice -- in this case referring more specifically to voice in the form of live calls, rather than messages -- over data networks.

NANP - North American Numbering Plan -

NPA Area Codes, NXX Exchanges and XXXX Line Numbers The process for assigning 10-digit (3+3+4) North American telephone numbers

Null Modem

is a communication method to connect two DTEs (computer, terminal, printer etc.) directly using a RS-232 serial cable.

PBX - Private Branch Exchange

A telephone exchange that is owned by a private business. A PBX connects all of a business's telephone sets to the public telephone network (PSTN) . All devices connected to the PBX are referred to as extensions (i.e. fax machines and modems).

The PBX equipment is usually installed at a business's premises, and connects calls between the telephones installed on-site. A company may use several outside lines (called trunk lines) for making and receiving calls external to the site which connect to the PSTN. Companies can connect multiple sites by linking PBXs together with trunk lines.

RS232

In telecommunications, RS-232 (Recommended Standard 232) is a standard for serial binary data signals connecting between a DTE (Data terminal equipment) and a DCE (Data Circuit-terminating Equipment). It is commonly used in computer serial ports

SMDR - STATION MESSAGE DETAIL RECORDING

A computer generated report showing internal usage on a telephone system. Usually including extension number, trunk number used, phone number dialed, time of call, duration and operator involvement.