Disaster Survival Guide for Business Communications Networks
By Richard Grigonis
Glossary
Numbers
1 Wiltshire
This is one of the biggest and oldest "telecom hotels" in the US. It is located at 1 Wiltshire Boulevard in Los Angeles, but is called "1 Wiltshire" for short. It is probably the largest "meet me" point on the west coast of the US, and is the gateway to the Pacific Rim.
10-100 Base-T
The number 10 or 100 represent the number of millions of bits per second. Base represents baseband and T represents trunk. Put them all together and you have a local area network (LAN) that can transmit data at 10 or 100 megabits per second.
See also Fast Ethernet.
1996 Telecommunications Act
This US act was passed in 1996, as an extension of the original Telecommunications Act of 1934, passed (ironically) in 1934. A lot happened between 1934 and 1996, so this Act was intended to formally establish competitive structures and to foster a free market environment in the US.
2B1Q (Two Binary, One Quaternary)
A line encoding technique used in ISDN BRI and in the first generation of HDSL systems. Through the use of the Pulse Amplitude Modulation (PAM) technique, 2B1Q can map two bits of data into one quarternary symbol. Thus, each symbol comprises one or four variations in amplitude and polarity over a circuit, i.e., this 4-level PAM technique allows two bits to be sent per Hertz or sine wave, allowing more data per second to be sent using a relatively low frequency.
ISDN, Hertz and PAM.
60 Hudson Street
This...
Copyright Richard Grigonis 2002 under license agreement with Books24x7