Mobile Solution Components
are two types of data networks:
switched is often called "dial-up". A device
using a circuit switched network only connects to it
when data is to be sent.
network is one where you are connected all the time and
only pay for the actual data sent.
all data-only wireless networks are packet networks. In
contrast, nearly all voice-only networks are circuit
are a growing number of wireless devices that provide
connections between computing devices and the wireless
networks. Wireless modems for the voce and data networks are
often incorporated into wireless voice handsets. All CDMA
handsets and many of the new GSM handsets require only a
serial cable to connect the handset to the computing device.
are many varieties of mobile computing devices available.
Most of these devices, such as Windows CE-based and Palm OS
based products are wireless ready in that it is easy to add
wireless modems and run wireless enabled applications. Some
devices now being introduced even include integrated
are many wireless-enabled applications available today. Many
of these are for the vertical markets that have embraced
wireless data in the past. At this time, many application
vendors are in the process of introducing applications for
the next phase of the market in areas such as sales force
automation, or for vertical markets such as insurance,
healthcare, and finance.
Many of the existing vertical business applications are
wireless-enabled using wireless middleware. Others were
developed specifically for the mobile marketplace, often
using wireless middleware to handle wireless communication
is an enabling layer of software that resides between the
business application and the networked layer of
heterogeneous platforms and protocols. Middleware is used to
create a three-tier architecture, which adds a layer of
functionality between the client and server. This tier
shields developers from the intricacies of underlying
operating environment and enables communication between
disparate networks. It is a software development tool or
wireless-enablement tool that provides a common set of APIs
to allow applications to communicate via wireless data