Asked in Broadband InternetLocal Area NetworkCisco
Local Area Network
What is the 16 Kbps line used for in ISDN connection?
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Asked in Broadband Internet
What is the 16kbps digital line used for in an isdn connection?
What is the 16 kbps digital line used for in an ISDN connection?
Asked in Fax Machines
Can you use an ordinary telephone or fax machine over ISDN?
Asked in Microsoft Windows, Windows XP, Windows Vista
What types of hardware can be used to create connections using the New connection wizard?
What does the abbreviation or acronym kbps stand for?
Asked in Electronics Engineering
What is e1?
e1 the basic data rate of communication in telecom( european ,india as well)... It is made up to 32 channels of 64 kbps PCM Time Slot (ISDN) each ... Time frame: 448ns Bit rate: 125us Bit no in 1 Time frame: 8 so E1=2048 kbps 0 and 16th channel used for synchronizing, remote access and monitoring E2 is 4xE1 package=8448 kbps E3 is 4xE2 package=24368 kbps E4 is 4xE3 package=139264 kbps
Asked in Computer Networking
How many 64kps channels are used for ISDN BRI?
What is N-isdn and B-isdn in detail please?
first of all isdn is integrated sevice digital netork it is used for all the communications n -isdn and b-isdn are the parts of isdn n -isdn is the first generation isdn it uses 64-kpbs channel and has acircuit switching implementation b-isdn is the second generation isdn it supports uery high data rates 100 and more mbps it supports packet switching
Asked in Computer Networking, Broadband Internet
Is linking the process to combine two 64 kbps isdn b chanels to a achieve an effective throughput of 128 kbps?
What is ISDN protocol stack?
ISDN-BRI (Integrated Services Digital Network--Basic Rate Interface) is not a protocol but, instead, is a telephony service that provides 128 kilobits per second (128 Kbps or 128 Kbaud) of bandwidth over two bonded 64K baud channels. It was never widespread in the US and has been dropped by many telephone companies in favor of DSL or other faster and better services. ISDN-PRI (with PRI standing for Primary Rate Interface) is what G543 was mentioning in his answer and it is the more expensive ISDN service available though it is mostly used to connect Private Branch Exchanges (PBXes) of businesses and other larger facilities to the packet switched telephone network (PSTN), otherwise known as the telephone system with which we are all familiar. Outside the US, ISDN-PRI uses an E1 carrier and has a total of 2048 Kbaud of bandwidth but only 1920 Kbaud is actually usable as 64 Kbaud is used for signalling and the other 64 Kbaud is used for an alarm channel. Within the US, though, ISDN-PRI is serviced on a T1 carrier line which has a maximum throughput of 1536 Kbaud (as opposed to the 1544 Kbaud possible on an analog T1 leased line), 1472 Kbaud of which is for data and the final 64 Kbaud is for signalling. ISDN-PRI is still in common use in the US but its days are numbered since the uses for the services are limited.
Asked in Computer Networking, Computer Terminology
How does ISDN relate to a T1 line?
Asked in Business and Industry
What is Integrated Services Digital Network?
An isdn stands for integrating services digital network ,it is a communication media througt which we can transmitte our voice,video and data, in isdn line two modem are used to for commnication one at source and other at the destination ,these modems are called isdn modem this is Qadar wafa from Kabul firstname.lastname@example.org email@example.com firstname.lastname@example.org
Asked in Telephones
What is a t-1 line?
AT1 line is a communications connection. It is a standard used in the telecommunications industry. It carries 1.445 Megabits per second. It has the ability to carry 24 separate voice channels. It can serve as a data carrier and provides very fast connectivity to the internet. The next higher increment is the T3 or DS3 which carries 28 T1s. The next lower line is a voice channel at 64 kbps, which is the standard telephone line.
Asked in Broadband Internet, Internet
What is difference between KBps and kbps?
Difference between osi layer and isdn layer?
ISDN make a separation between user data and voice,in ISDN there are two type of channels, D Channels and B channel, there ability is different, in bandwidth and they have different type of combination, D channel has 16 Kbps bit and it used for controlling, but B channel have 64 Kbps its used for actual transfer of user data many variation of combination between D and B channels but the basic equation where (2B+d) which means too data channel plus one control and that known as BRI (basic Rate Interface) its normally user for home uses, another combination is PRI (Primary Rate Interface) which use more than two B channel plus single D channel this type used for business solution, There are different combination to these channels in most of countries like in Europe they make combination on B+D equivalent to E1(2048)Mbps, in US Equivalent to T1 (1.544 )Mbps, but in OSI this is the responsibility of transport layer to recognize the physical capacity and isolate that from upper layers by making framing to big amount of data to smaller one and put controls to let image transport layer in destination notice that, OSI have seven layer, and all those layer are active instead ISDN is reach only third Layer (network layer), OSI is connection less protocol and it depends in HDLC which is packet protocol technique, instead ISDN built up X.25 which is connection oriented in sense of VC (virtual circuit), ISDN basically make a distinction between user data and voice cause is based on subscriber or telephony system, but OSI make mixture of data stream by using transport layer and it manage to hide the l, in than layer there is a multiplexing process for session layer to make all those distinct process (user application) transfer in one virtual connection and to be controlled via transport layer. ISDN (RM) have thee palnes user managment and control palnes but OSI (RM) have only one planes user palne in ISDN equivelant to signaling use plane in OSI , manament and those are the basic deference's RM= Reference Model.
How can a telephone line be used when a DSL connection is active?
Asked in Technology
What should you do to ensure that the 128-kbps link is used only if the T-1 is unavailable?
The difference between PSTN and ISDN in hsdpa?
WHAT IS THE DIFFERENCE BETWEEN ISDN AND PSTN ? The PSTN is the Public Switched Telephone Network and is therefore a service provided by a telecommunications company. The ISDN is the Integrated Services Digital Network and is a technology, providing digital end to end connectivity. However, calls originating from an ISDN site, will transverse the PSTN in order to be received by the called party. The call received by the called party, may be digital, if they also have ISDN service, or the call may be converted by the central office to meet the technology being used by the receiving party.
What are two examples of broadband technology?
GSM (Global System for Mobile communication) is a digital mobile telephone system that is widely used in Europe and other parts of the world. High-Speed Circuit-Switched Data (HSCSD) is circuit-switched wireless data transmission for mobile users at data rates up to 38.4 Kbps POTS stands for Plain Old Telephone System GPRS (General Packet Radio Services) is a packet-based wireless communication service that, when available in 2000, promises data rates from 56 up to 114 Kbps and continuous connection to the Internet for mobile phone and computer users. Integrated Services Digital Network (ISDN) is a set of CCITT/ITU standards for digital transmission over ordinary telephone copper wire as well as over other media. IDSL is a system in which digital data is transmitted at 128 Kbps on a regular copper telephone line (twisted pair) from a user to a destination using digital (rather than analog or voice) transmission, bypassing the telephone company's central office equipment that handles analog signals. IDSL uses the Integrated Services Digital Network (Integrated Services Digital Network) Basic Rate Interface in ISDN transmission code. 1. Possible answers: cable modem and DSL
Asked in Computer Networking, Telecommunications
What are the evolution of ISDN?
Evolution of ISDN describes the growing of technologies is ISDN.ISDN is tele phone communication it used to send the video,image and data.it builted with circuits in telecommunication. while sending of data in network there may mat collaboration of data to avoid this ,we are using good tramission technologies as ISDN using thing telecommuniction grow up.
Advantages and disadvantages of ISDN?
Speed The modem was a big breakthrough in computer communications. It allowed computers to communicate by converting their digital information into an analog signal to travel through the public phone network. There is an upper limit to the amount of information that an analog telephone line can hold. Currently, it is about 56 kb/s bidirectionally. Commonly available modems have a maximum speed of 56 kb/s, but are limited by the quality of the analog connection and routinely go about 45-50 kb/s. ISDN allows multiple digital channels to be operated simultaneously through the same regular phone wiring used for analog lines. The change comes about when the telephone company's switches can support digital connections. Therefore, the same physical wiring can be used, but a digital signal, instead of an analog signal, is transmitted across the line. This scheme permits a much higher data transfer rate than analog lines. BRI ISDN, using a channel aggregation protocol such as BONDING or Multilink-PPP, supports an uncompressed data transfer speed of 128 kb/s, plus bandwidth for overhead and signaling. In addition, the latency, or the amount of time it takes for a communication to begin, on an ISDN line is typically about half that of an analog line. This improves response for interactive applications, such as games. Multiple Devices Previously, it was necessary to have a separate phone line for each device you wished to use simultaneously. For example, one line each was required for a telephone, fax, computer, bridge/router, and live video conference system. Transferring a file to someone while talking on the phone or seeing their live picture on a video screen would require several potentially expensive phone lines. ISDN allows multiple devices to share a single line. It is possible to combine many different digital data sources and have the information routed to the proper destination. Since the line is digital, it is easier to keep the noise and interference out while combining these signals. ISDN technically refers to a specific set of digital services provided through a single, standard interface. Without ISDN, distinct interfaces are required instead. Signaling (gogo) Instead of the phone company sending a ring voltage signal to ring the bell in your phone ("In-Band signal"), it sends a digital packet on a separate channel ("Out-of-Band signal"). The Out-of-Band signal does not disturb established connections, no bandwidth is taken from the data channels, and call setup time is very fast. For example, a V.90 or V.92 modem typically takes 30-60 seconds to establish a connection; an ISDN call setup usually takes less than 2 seconds. The signaling also indicates who is calling, what type of call it is (data/voice), and what number was dialed. Available ISDN phone equipment is then capable of making intelligent decisions on how to direct the call.