Whois & Analysis for opencnam.com

Caller ID (caller identification, CID), also called calling line identification (CLID), Calling Line Identification (CLI), calling number delivery (CND), calling number identification (CNID), calling line identification presentation (CLIP), or call display, is a telephone service, available in analog and digital telephone systems, including VoIP, that transmits a caller's telephone number to the called party's telephone equipment when the call is being set up.

The caller ID service may include the transmission of a name associated with the calling telephone number, in a service called CNAM.

SIGTRAN is the name, derived from signaling transport, of the former Internet Engineering Task Force (IETF) working group that produced specifications for a family of protocols that provide reliable datagram service and user layer adaptations for Signaling System 7 (SS7) and ISDN communications protocols.

The SIGTRAN protocols are an extension of the SS7 protocol family.

It supports the same application and call management paradigms as SS7 but uses an Internet Protocol (IP) transport called Stream Control Transmission Protocol (SCTP), instead of TCP or UDP.

Indeed, the most significant protocol defined by the SIGTRAN group is SCTP, which is used to carry PSTN signaling over IP.

Signaling System No. 7 (SS7) is a set of telephony signaling protocols developed in 1975, which is used to set up and tear down most of the world's public switched telephone network (PSTN) telephone calls.

It also performs number translation, local number portability, prepaid billing, Short Message Service (SMS), and other mass market services.

A business telephone system is a multiline telephone system typically used in business environments, encompassing systems ranging from small key telephone systems (KTS) to large private branch exchanges (PBX).

In computer programming, an application programming interface (API) is a set of subroutine definitions, communication protocols, and tools for building software.

In general terms, it is a set of clearly defined methods of communication between various components.

A good API makes it easier to develop a computer program by providing all the building blocks, which are then put together by the programmer.