|
I take it that means such standards as GSM (Global
System for Mobile Communication); CDMA (Code Division Multiple Access) or TDMA (Time Division Multiple Access).
How many standards are there currently? How do they differ in general? Do they pertain to different services (ie,
email, Usenet service, FTP, WWW) or to different products, Nokia's 9000 series vs Ericsson's whatever?
There are approximately five to six major network types deployed worldwide. GSM, CDMA, TDMA, Analog, and iDEN.
They are all potentially independent of the typical data services like email etc. However, the communication control,
address administration, access control are potentially different and need this harmonization.
What is the iDEN system? Just basically. What
does the acronym stand for and what purpose does the system serve?
|
|
|
|
iDEN was developed by Motorola. The basic idea is that it is a cellular/PCS-based system, but uses packet networking
to differentiate its capabilities, such as the "push to talk" dispatch capability. A growing number of
operators have deployed it. It has a number of unique features that have made it very popular with customer segments
like the construction industry. There are approximately two million subscribers in the US.
|
