ISDN & B-ISDN Flashcards
(49 cards)
Is a circuit-switched telephone network system that transmits both data and voice over a digital line.
ISDN or Integrated Services Digital Network
You can also think of it as a set of communication standards to transmit data, voice, and signaling.
These digital lines could be _______. It was designed to move outdated landline technology to digital.
copper lines
Have a reputation for providing better speeds and higher quality than traditional connections. Faster speeds and better connections allow data transmissions to travel more reliably
ISDN connections
The modern upgrade to an ISDN would be a cloud phone system or ______ they use the internet for phone service.
SIP or Session Initiation Protocol Trunking
It was born out of necessity. Analog phone networks failed constantly and proved to be unreliable
for long-distance connections.
Integrated Services Digital Network
In what year the ISDN system began to change over to a packet-based, digital switching system
1960s
started recommending ISDN in _____ as a new system for operating companies to deliver data
The UN-based International Telecommunications Union, or ITU in year 1988
It still took time for communication providers to begin to offer ISDN. This was mainly because both
major companies at the time were on separate operating systems. By the ______, the National ISDN 1
(labeled N1-2 for short) was created.
1990s
Finally, manufactures like _____decided to make the transition easier for everyone
Motorola and USRobotics
Today, ISDN has been replaced by broadband internet access connections like _______. It is still used as a backup when the main lines fail.
DSL, WAN, and cable modems
Setting up ISDN is something you’ll want to work on with your _____. A lot of the steps can easily be done from your home.
Internet Service Provider (ISP)
Your ISDN will be plugged in through a traditional _______ line that can access both phone numbers at once.
POTS (Plain Old Telephone Service)
transmits data far faster
than an ISDN line can.
Digital Sucriber Line
Setting up an ISDN connection involves using a serial port and plugging in the telephone company line. The process of setting up ISDN involves
- Loading the modem driver disk and programming the modem
- Pointing the modem toward the right phone numbers
- Setting your connection speeds for each line
- Directing your modem to dial your ISP (Internet Service Provider) — this phone number should be provided by your ISP
- If necessary, set your modem for BONDING (the ability to access higher speeds by allowing your modem to dial both phone numbers at once)
Is a dial-up service that goes through a singular line
Integrated Services Digital Network
Connections never need to dial. They are sometimes called “always-on connections.
Digital Subscriber Line
_____ sends its packets at speeds up to 100 Mbps, while _____ tops out around 128 Kbps.
DLS, ISDN
What are the types of ISDNs?
BRI (Basic Rate Interface) and PRI (Primary Rate Interface)
The lower tier of service. It only provides basic needs at a lower cost.
BRI
the main service. It provides a better connection, more reliable service, and faster speeds.
PRI
SDN use B channels for sending data and D channels for other forms of communication.
The difference lies in the number of channels they use to accomplish this.
Both PRI and BR
uses only two B channels and one D channel. It has a maximum speed of 128 kbps.
BRI
varies in the number of channels it uses given its location. It can be adjusted for speeds up to 2.94 Mbps.
PRI
In the US, ____ tends to use 23 B channels and one D channel. The amount can be doubled for faster speeds and to provide a backup D line in case of emergencies.
PRI
