All about Internet Service Providers
Providing service access for internet use is the business of an Internet Service Provider (ISP). The following entities – commercial, community-based, non-profit, privately-owned, are forms of organization that can be internet service providers. Examples of various services that are offered by an ISP are internet access, internet transit, domain name registration, web hosting, Usenet service, and collocation.
The internet is composed of a network of networks, so that any ISP may connect to a larger network and become affiliated or become a part of that network. In your region, whichever is a large, conglomerate communications network could also be an ISP, and, at the same time, a part of a bigger network which is into internet accessing and which could originate from another country.
The following are classifications of internet service provider (ISP): access providers, mailbox providers, hosting ISPs, transit ISPs, virtual ISPs, free ISPs, and wireless ISP.
Access providers supply internet access via the following technology: computer modems with acoustic couplers, telephone lines, television cable (CATV), wi-fi, and fiber optics. Furthermore, for small businesses, the access providers may also provide the following services – dial-up, DSL,asymmetric digital subscriber line,cable modem or Integrated Services Digital Network. For medium-to-large businesses, which have more demanding requirements, access providers may further offer these technologies – higher-speed DSL, Ethernet, metropolitan Ethernet, gigabit Ethernet, Frame Relay, ISDN Primary Rate Interface, ATM (Asynchronous Transfer Mode) and SONET (synchronous optical networking).
A mailbox provider refers to any organization which is in the business service for hosting electronic mail domains and which can also provide access to storage for mail boxes. A mailbox provider can also be an access provider, if it also offers similar services of access providers. Basically, mail providers offer email services, which employ the sending, receiving, accepting, and storing of emails for the users.
Hosting ISPs provide these services – email, web-hosting, online storage services, as well as a virtual server, cloud services, physical server operation.
A transit ISP applies to an upstream ISPs, to access internet to their customers.
A virtual ISP operates by purchasing services from another ISP, which is termed as wholesale ISP, such that the end users of the virtual ISP can access to the services and infrastructures of the wholesale ISP. Virtual ISP is likened to mobile virtual network operators or competitive local exchange carriers.
Free ISPs operate by providing free of charge services, but earn through the various advertisements displayed on the screen while their users are availing of free internet service. Free ISPs operate as non-profit organizations and are run by a staff of volunteers.
The network operating wireless ISPs is based on wireless technology. Such technologies that may be referred to are the following: commonplace Wi-Fi wireless mesh networking, or proprietary equipment designed to operate over open 900 MHz, 2.4 GHz, 4.9, 5.2, 5.4, 5.7, and 5.8 GHz bands or licensed frequencies such as 2.5 GHz (EBS/BRS), 3.65 GHz (NN) and in the UHF band (including the MMDS frequency band) and LMDS.
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