flow over a mobile cellular network, details on structured
cabling, connecting Macs to your network using AppleTalk
and the usual solutions to vexing network problems
does data flow between the mobile service provider
and the user? What are the advantages of the different
protocols available and what are the limitations?
Which are the most widely used protocols? Specify
the different bandwidths that are used in mobile technologies.
All cell phones have special codes associated to them.
These codes are used to identify the phone, the phone's
owner and the service provider. When you first power
up the phone, it listens for a SID on the control
channel. The control channel is a special frequency
that the phone and base station use, to talk to one
another about things such as call set-up and channel
changing. If the phone cannot find any control channels
to listen to, it knows it is out of range, and displays
a "no service" message.
When it receives the SID, the phone compares it to
the SID programmed into the phone. If the SIDs match,
the phone knows that the cell it is communicating
with is part of its home system. Along with the SID,
the phone also transmits a registration request, and
the MTSO (Mobile Telephone Switching Office) keeps
track of your phone's location in a database. Hence,
the MTSO knows which cell you are in when it wants
to ring your phone.
The MTSO gets the call, and it tries to find you.
It looks in its database to see which cell you are
in. The MTSO picks a frequency pair that your phone
will use in that cell to take the call. The MTSO communicates
with your phone over the control channel to tell it
what frequencies to use, and once your phone and the
tower switch on those frequencies, the call is connected.
You are talking by two-way radio to a friend! As you
move toward the edge of your cell, your cell's base
station will note that your signal strength is diminishing.
Meanwhile, the base station in the cell you are moving
toward (which is listening and measuring signal strength
on all frequencies, not just its own one-seventh)
will be able to see your phone's signal strength increasing.
The two base stations coordinate themselves through
the MTSO, and at some point, your phone gets a signal
on a control channel telling it to change frequencies.
This hand off switches your phone to the new cell.
For more information on how cell phones work and how
data signals transfer from one mobile phone to another,
wish to connect two computers via cable to transfer
data and to use a single Internet connection on both.
Please let me know how I can do this and what accessories
I need for the setup?
When you set up Internet Connection Sharing (ICS)
on the host computer, two network adapters are required
for ICS to function properly. To determine the number
of adapters that are installed, double-click Network,
in Control Panel. Look in the Network Properties dialog
box for the information that is appropriate to your
computers that are using a standard modem connection,
the following adapters are used:
TCP/IP (Shared)Dialup Adapter
TCP/IP (Home) Network Adapter
For more information on Internet Connection Sharing
is a link with information on "How to Network
Two Windows 95/98 Computers"
For more information on Internet connection sharing
in Windows visit http://www.infinisource.com/techfiles/ics-troubleshooting.html
you explain in detail structured cabling? How is it
done and what devices are required?
Structured Cabling is a system of wiring wherein the
main components, once installed, do not change. In
its most basic form, a structured wiring system consists
of horizontal wiring and appropriate connecting hardware.
Structured Cabling is a technique of cabling buildings
for the purpose of electronic communications. It is
a standard method of engineering and installing a
data and voice cabling system in a business environment.
It provides the flexibility of application independence,
multiple logical topologies, and easy moves, adds
and changes. Structured Cabling System (SCS) wiring
is defined as all required equipment and cabling,
including hardware, termination blocks, cross connect
wire or cordage, patch panels, patch cords, telecommunication
outlets, and fiber light guide, cable installed and
configured to provide computer data and voice connectivity
from each data or voice device to the network file
server or voice network/switch designated as the service
point of the local area network.
The SCS serves as a vehicle for transport of data,
video and voice telephony signals throughout the network
from designated demarcation points to outlets located
at various desks, workstation and other locations
as indicated by the customer. In addition, these links/channels
are capable of supporting high-end applications such
as 100 Base-T.
For more information on Structured cabling visit:
you please give me information on the following?
Class A, B, C and D
Subnet Mask and how I can change my subnet ID?
When does it become necessary to change my subnet
Generally speaking, each computer that accesses the
Internet has to have a unique IP address. In most
cases, when you connect to the Internet from home,
your Internet service provider assigns a unique IP
address to your computer. But, if you want to connect
all the computers in your office to the Internet at
the same time using a single Internet connection,
you'd usually ask your Internet service provider for
a range of IP addresses one IP address per computer.
This is where different IP classes come into play
depending on the number of computers you want to connect
you'd need a different class of IP address range.
This is the most widely used class by small businesses.
When you look at the IP address, you'll notice that
class C networks start with a first number that's
between 192 and 223 (205.161.74.x for example). This
can range up to 2,097,151 class C networks and each
network can handle close to 254 computers.
IP addresses of this type range between 128 and
191. It's possible to have 16,384 of these networks
and each class B network can handle up to 65,534 IP
addresses or computers.
Ranges between 1 and 126. Only 126 of these networks
are available. However, each class A network can handle
16,777,214 IP addresses or computers.
For more information on TCP/IP, please visit http://www.hill.com/library/publications/tcpip.shtml
For information on subnet masking visit http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_v42/pix42cfg/pix42ape.htm
am new to networking and am very interested in it.
Could you please suggest some good sites where I can
read articles on networking concepts, beginning from
the basic through advanced?
following links contain tutorials on networking: http://elara.hypermart.net/webdirectory/PERL/Tutorials/Networking/
give me information on the following:
I want to network four MACs with 10 IBM PCs, through
structured CAT 5 cables. Do you suggest a 24/32
port 100 mbps hub or a LAN Switch for faster speed
Which protocol/ software should be used for the
four MACs to be part of the IBM PCs' network,
so that all can communicate amongst each other,
be it PC to PC, PC to MAC and vice-versa? How
do I do it under Windows 2000.
Hubs and switches basically perform the same function.
They connect multiple computers and equipment, though
how they do this varies.
While a switch is faster, a hub is economical. You
can go for a switch if your priority is high bandwidth
in a multiple user and heavy application environment.
You can go for a Hub if you have less users or light
applications. Meanwhile, a switch is always a good
You can use the AppleTalk protocol to communicate
MAC with other computers.
Networking on an Apple Macintosh computer is implemented
through the AppleTalk protocol. Applications and processes
can communicate across a single AppleTalk network
or an AppleTalk Internet, which is a number of interconnected
AppleTalk networks. By using AppleTalk, applications
and processes can be transferred, data can be exchanged
and resources such as printers and file servers can
be shared. AppleTalk remote access is supported by
the AppleTalk Control Protocol (ATCP).
With ATCP, Macintosh clients can run the AppleTalk
network protocol over Point-to-Point Protocol (PPP).
With ATCP support, a remote user can access a Web
server over TCP/IP, print a document to an AppleTalk
printer, and connect to a Macintosh file server (over
TCP/IP or AppleTalk), all with the same dial-up connection
The following configuration steps are related to Windows
2000 Operating System.
Open Network and Dial-up Connections.
Right-click the connection you want to configure,
and then click Properties.
Do one or more of the following:
To configure dialing devices, phone numbers, host
address, country/region codes, or dialing rules,
click the General tab.
To configure dialing and redialing options, multilink
configuration, or X.25 parameters, click the Options
To configure identity authentication, data encryption,
or terminal window and scripting options, click
the Security tab.
To configure the remote access server and protocols
used for this connection, click the Networking
To enable or disable Internet connection sharing
and on-demand dialing, click the Sharing tab.
Note: To open Network and Dial-up Connections, click
Start, point to Settings, and then click Network and
Depending on the type of connection you are configuring,
different options appear. For example, a local area
connection only displays the General tab.
am using a laptop and a desktop. My hard disk of my
laptop has crashed. I want to restore the data backup
(on the desktop) to my laptop computer through a PCMCIA
card driver. I propose to do this by booting up the
laptop with the bootable floppies and from there I
want to get the data on to my desktop with a network
card. Is there any way of recognizing the PCMCIA card
in DOS? That is, is it possible to assign some drive
letter to the PCMCIA card while the system boots from
a bootable floppy drive?
Please let me know the make and model of the PCMCIA
card and the laptop that you are using. Most of the
PCMCIA card manufacturers provide DOS drivers/software
that enables the PCMCIA card to work under DOS. However,
you can try the following, which might help you find
a solution for the problem you are facing.
Networking the Laptop and the Desktop.
Using an External Zip Drive/CD Writer.
can a Wireless LAN be implemented? What is the methodology
used? What are the advantages and disadvantages?
wireless LAN is a flexible data communications system
implemented as an extension to, or as an alternative
for, a wired LAN. Using radio frequency (RF) technology,
wireless LANs transmit and receive data over the air,
minimizing the need for wired connections. Thus, wireless
LANs combine data connectivity with user mobility.
For more information on setting up a wireless LAN
and for benefits of wireless LANs visit http://www.wirelesslan.com/benefits/.
do I connect a cable to a connector? Can you please
give details about the cable, how many wires should
be there and the value of each wire?
A connector is part of a cable that plugs into a port
or interface to connect one device to another. Most
connectors are either male (containing one or more
exposed pins) or female (containing holes in which
the male connector can be inserted).
For more information on connecting a cable to a connector
can two computers communicate using IR rays?
In order to connect two Windows 95 computers using
IrDA, you need to have the IrDA driver, which is compatible
with Windows 95.
Here is the link which provides information about
the drivers used to connect two Windows 95 system
using IrDA and to download the same:
connect your Desktop to the Notebook using Infrared
Infrared is a communication port generally used in
hand-held devices such as Palmtop, which are equipped
with an Infrared port. Infrared port is usually in-built
with the Laptops and Palmtops.
For more information on IRDA visit http://www.pcquest.com/jul97/irda.html
supports only a distance of up to seven meters.
you please tell me how to network three computers
using a LAN card step-by- step?
Check the links below for a step-by-step explanation
for connecting three computers using a LAN card.
have two computers with Windows 98 installed on both.
How do I connect them using an Ethernet card?
For connecting computers, you should have the following
important components installed in the Configuration
tab of Network dialog boxes that you can get by double-clicking
on the Network icon in Control panel window displayed
by clicking Start-Settings- Control Panel in both
Client for Microsoft Networks.
File and printer sharing for Microsoft Networks
(If printers need to be shared)
Here are some links, which give information regarding
configuring a network in Windows 98/ 98 SE and Windows
have a Windows 2000 Professional system with D-link
56kbps external modem while my friend also has a Windows
2000 Professional system with 56kbps HSP micro internal
modem. We have tried to connect the two computers
through my phone line and modem. We made one connection
for incoming calls and have also made a new connection
with the other PC's phone number. When I dial to my
friend's PC, I only get the fax tone i.e. the tone
one gets when one connects to the ISP. After that
nothing happens. Can you explain how I can complete
You can use HyperTerminal in order to connect two
computers. Please follow the steps given below to
start the HyperTerminal:
1. You can start HyperTerminal by clicking Start-Programs-Accessories-
2. Click HyperTerminal-Click Hypertrm.exe.
For information about how to use HyperTerminal, click
the Help menu in HyperTerminal. NM
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