Cross-functional flowchart - Providing telecom services

This swim lane diagram sample shows the telecom services process flow.
"Telecommunication is communication at a distance by technological means, particularly through electrical signals or electromagnetic waves. ...
Electrical and electromagnetic telecommunication technologies include telegraph, telephone, and teleprinter, networks, radio, microwave transmission, fiber optics, communications satellites and the Internet." [Telecommunication. Wikipedia]
"A telecommunications service provider or TSP is a type of communications service provider that has traditionally provided telephone and similar services. This category includes incumbent local exchange carriers, competitive local exchange carriers, and mobile wireless communication companies. ...
While some people use the terms "telecom service provider" and "communications service provider" interchangeably, the term TSP generally excludes Internet service providers (ISPs), cable companies, satellite TV, and managed service providers. ...
TSPs provide access to telephone and related communications services." [Telecommunications service provider. Wikipedia]
The cross-functional flowchart example "Providing telecom services" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cross-Functional Flowcharts solution from the Business Processes area of ConceptDraw Solution Park.

This process flowchart sample shows the telecommunication services.
"Telecommunication is communication at a distance by technological means, particularly through electrical signals or electromagnetic waves. ...
Electrical and electromagnetic telecommunication technologies include telegraph, telephone, and teleprinter, networks, radio, microwave transmission, fiber optics, communications satellites and the Internet." [Telecommunication. Wikipedia]
"A telecommunications service provider or TSP is a type of communications service provider that has traditionally provided telephone and similar services. This category includes incumbent local exchange carriers, competitive local exchange carriers, and mobile wireless communication companies. ...
While some people use the terms "telecom service provider" and "communications service provider" interchangeably, the term TSP generally excludes Internet service providers (ISPs), cable companies, satellite TV, and managed service providers. ...
TSPs provide access to telephone and related communications services." [Telecommunications service provider. Wikipedia]
The swim lane diagram example "Process flowchart - Providing telecom services" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Process Flowcharts solution from the Business Processes area of ConceptDraw Solution Park.

The 3D vertical bar graph sample shows the Iran internet users per 100 person from 2000 to 2011. It was designed on the base of the Commons Wikimedia file: Iran internet users per 100 person.png.
[commons.wikimedia.org/ wiki/ File:Iran_ internet_ users_ per_ 100_ person.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
The data source is World Bank: [data.worldbank.org/ country/ iran-islamic-republic]
"In 1993 Iran became the second country in the Middle East to be connected to the Internet, and since then the government has made significant efforts to improve the nation's ICT infrastructure. Iran's national Internet connectivity infrastructure is based on two major networks: the public switched telephone network (PSTN) and the public data network. The PSTN provides a connection for end-users to Internet service providers (ISPs) over mostly digital lines and supports modem-based connections. The Data Communication Company of Iran (DCI), a subsidiary of TCI, operates the public data network." [Internet in Iran. Wikipedia]
The 3D column chart example "Iran internet users per 100 person" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Bar Graphs solution from the Graphs and Charts area of ConceptDraw Solution Park.

This Cisco network diagram example was redesigned from the Wikimedia Commons file: EPN Frame-Relay and Dial-up Network.svg.
[commons.wikimedia.org/ wiki/ File:EPN_ Frame-Relay_ and_ Dial-up_ Network.svg]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
This diagram depicts enterprise private network (EPN) using frame-relay and dial-up.
"An enterprise private network is a computer network built by a business to interconnect its various company sites (such as production sites, offices and shops) in order to share computer resources." [Enterprise private network. Wikipedia]
"Dial-up Internet access is a form of Internet access that uses the facilities of the public switched telephone network (PSTN) to establish a dialed connection to an Internet service provider (ISP) via telephone lines. The user's computer or router uses an attached modem to encode and decode Internet Protocol packets and control information into and from analogue audio frequency signals, respectively. Dial-up internet is sometimes used where Broadband internet access is not available; primarily in rural or remote areas." [Dial-up Internet access. Wikipedia]
The example "Enterprise private network" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

This marketing diagram sample illustrates leaky bucket model.
"The leaky bucket theory. The leaky bucket theory is the model that seeks to describe the process of customer gain and loss, otherwise known as customer churn. Customer retention is one of the key concepts in relationship marketing. Most companies concentrate on recruiting new customers to replace customers who move on, rather than seeking to retain customers." [Blythe J. Key Concepts in Marketing. 2009. knowledge.sagepub.com/ view/ key-concepts-in-marketing/ n5.xml]
"Customer attrition, also known as customer churn, customer turnover, or customer defection, is the loss of clients or customers.
Banks, telephone service companies, Internet service providers, pay TV companies, insurance firms, and alarm monitoring services, often use customer attrition analysis and customer attrition rates as one of their key business metrics (along with cash flow, EBITDA, etc.) because the "...cost of retaining an existing customer is far less than acquiring a new one." Companies from these sectors often have customer service branches which attempt to win back defecting clients, because recovered long-term customers can be worth much more to a company than newly recruited clients." [Customer attrition. Wikipedia]
The chart example "Leaky bucket diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Marketing Diagrams solution from the Marketing area of ConceptDraw Solution Park.

The vector stencils library "Tranzeo" contains 13 clipart icons of Tranzeo devices for drawing computer network diagrams and telecommunication equipment layouts.
"Tranzeo Wireless Technologies Inc. ... leads the wireless broadband industry as a premier manufacturer of high-performance wireless network equipment...
Tranzeo's full spectrum of point-to-point and point-to-multipoint radios, WiMAX equipment, and mesh network solutions are designed for wireless internet service providers, governments, campuses, military, carriers, enterprise customers, and systems integrators..." [tranzeo.com]
The clip art example "Tranzeo - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ computer-networks-telecommunication

"There are two definitions for wireless LAN roaming:
Internal Roaming (1): The Mobile Station (MS) moves from one access point (AP) to another AP within a home network because the signal strength is too weak. An authentication server (RADIUS) performs the re-authentication of MS via 802.1x (e.g. with PEAP). The billing of QoS is in the home network. A Mobile Station roaming from one access point to another often interrupts the flow of data among the Mobile Station and an application connected to the network. The Mobile Station, for instance, periodically monitors the presence of alternative access points (ones that will provide a better connection). At some point, based on proprietary mechanisms, the Mobile Station decides to re-associate with an access point having a stronger wireless signal. The Mobile Station, however, may lose a connection with an access point before associating with another access point. In order to provide reliable connections with applications, the Mobile Station must generally include software that provides session persistence.
External Roaming (2): The MS (client) moves into a WLAN of another Wireless Internet Service Provider (WISP) and takes their services (Hotspot). The user can independently of his home network use another foreign network, if this is open for visitors. There must be special authentication and billing systems for mobile services in a foreign network." [Wireless LAN. Wikipedia]
This Cisco roaming wireless local area network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.