Interested to Buy Any Domain ? << Click Here >> for more details...
how mobile to mobile call set-up?
plz give the answer in detail........
- 2 Answers
- 5336 Views
- I also Faced
- E-Mail Answers
Answer Posted / ambarishksharma
The first thing that you need to understand is that Mobile
is called as the MS (Mobile Station), so hence forth I will
be using this term...
Now once you dial or key in a numbe rfrom ur MS, The signal
is sent via the Uplink channel to the serving BTS(bASE
tRANSCIEVER Station), This is the Analog link...for 900 MHZ
Band.
The BTS is responsible for the proper delivery of this
signal over the PCM (Pulse Code Modulation Link), This is
all digital..The modulation scheme being used is neither
ASK, PSK, Its called as Gaussian MSK...
By this termn you simply need to understand that MSK is
called as Minimum shift keying...if you know the gaussian
curve its as simle as that...
Now, Once the signal reaches the serving BTS, VTS ROUTES
teh call to MSC, This is the heart of the System (Mobile
Switching Centre). MSC depending on teh called number
routes the call to the MSC which is serving that Number.
Once the call goes to the called number MSC it searches for
the location of the MS in the respective HLR (Home Location
Register). This is the centralised database for each state,
keeping the geographical location and various other data of
the MS.
Now, once the location of the called MS is retrieved, the
call goes to the MS and a two way link is setup based upon
the condition that the called number is not busy...
Thats all dear....It's as simple as talking right.... :-)
| Is This Answer Correct ? | 14 Yes | 0 No |
Post New Answer View All Answers
Hello Can any body tell me the list of interview answers asked UMTS Planning and optimazation as i have interview today. Pla mail me on satish_jd2000@yahoo.com its urgent. Thank you
Explain what is the tri state of a signal?
can anyone help me out to get HPCL officer's trainee paper's pattern....sureshec127@gmail.com
What are the main classification of inverter?
R/s syllabus required to crack Mahagenco interview for jr eng. post. I also want sample papper
where do i get exercises for electronic circuits lab, i.e, designing various waveform(clipper, clamper, rectifiers)
What is monotonic dac?
Impedence of a parallel resonant circuit at resonance is ?
What is the approximate cost of the smart pebbles eci-1(embedded corrosion instrument)?
Is it possible to calculate a voltage for microwave energy generating in oven? Is there any formula relating frequency and voltage and it should be independent of speed?
how pwm signals generated????
A thread has to access the address space of all other threads in the same process and can therefore mess up the stacks of other threads. Why is this not a protection problem? Could the same be allowed to occur for processes, e.g. one process writing data into the stack of other.
Explain the various components used in creating digital circuits?
why the signals of wireless in db value
Explain why 440 volts instead of 660 volts in 3 phases of supply system?
