Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Free
Faster access than browser!
 

X.121

Index X.121

X.121 is the ITU-T address format of the X.25 protocol suite used as part of call setup to establish a switched virtual circuit between Public Data Networks (PDNs), connecting two network user addresses (NUAs). [1]

11 relations: Binary-coded decimal, Data terminal equipment, IPv4 address exhaustion, ITU-T, Packet Layer Protocol, Packet switching, Protocol stack, Public data network, Videotex, Virtual circuit, X.25.

Binary-coded decimal

In computing and electronic systems, binary-coded decimal (BCD) is a class of binary encodings of decimal numbers where each decimal digit is represented by a fixed number of bits, usually four or eight.

New!!: X.121 and Binary-coded decimal · See more »

Data terminal equipment

Data terminal equipment (DTE) is an end instrument that converts user information into signals or reconverts received signals.

New!!: X.121 and Data terminal equipment · See more »

IPv4 address exhaustion

IPv4 address exhaustion is the depletion of the pool of unallocated IPv4 addresses.

New!!: X.121 and IPv4 address exhaustion · See more »

ITU-T

The ITU Telecommunication Standardization Sector (ITU-T) is one of the three sectors (divisions or units) of the International Telecommunication Union (ITU); it coordinates standards for telecommunications.

New!!: X.121 and ITU-T · See more »

Packet Layer Protocol

Packet Layer Protocol or PLP is the Network Layer protocol for the X.25 protocol suite.

New!!: X.121 and Packet Layer Protocol · See more »

Packet switching

Packet switching is a method of grouping data which is transmitted over a digital network into packets which are made of a header and a payload.

New!!: X.121 and Packet switching · See more »

Protocol stack

The protocol stack or network stack is an implementation of a computer networking protocol suite or protocol family.

New!!: X.121 and Protocol stack · See more »

Public data network

A public data network is a network established and operated by a telecommunications administration, or a recognized private operating agency, for the specific purpose of providing data transmission services for the public.

New!!: X.121 and Public data network · See more »

Videotex

Videotex (or "interactive videotex") was one of the earliest implementations of an end-user information system.

New!!: X.121 and Videotex · See more »

Virtual circuit

A virtual circuit (VC) is a means of transporting data over a packet switched computer network in such a way that it appears as though there is a dedicated physical layer link between the source and destination end systems of this data.

New!!: X.121 and Virtual circuit · See more »

X.25

X.25 is an ITU-T standard protocol suite for packet switched wide area network (WAN) communication.

New!!: X.121 and X.25 · See more »

Redirects here:

Data Network Identification Code, Data network identification code, International Data Number, International data number, National Terminal Number, National terminal number, X.121 Address Format.

References

[1] https://en.wikipedia.org/wiki/X.121

OutgoingIncoming
Hey! We are on Facebook now! »