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 Telecom Routers Switches interview questions  Telecom Routers Switches Interview Questions
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Question 
gsm call flow for MS to SMS? and GSM  call flow fro MS to 
roaming MS?
 Question Submitted By :: Narayanreddy
I also faced this Question!!     Rank Answer Posted By  
 
  Re: gsm call flow for MS to SMS? and GSM call flow fro MS to roaming MS?
Answer
# 1		 
GSM call flow from MS to roaming MS- 
The MSC sends ISUP IAM to GMSC, GMSC analyses the dialled
digits and figure out which HLR to query and send "Send
Routing Information". HLR always knows the exact location of
mobile in the form of address of MSC/VLR.HLR sends "provide
roaming number" asking MSRN(Mobile Station Routing Number).
MSC-serving provides the MSRN in return message and HLR
forwards it to GMSC which inturn sends IAM to MSC-S.

  MS       MSC     GMSC             HLR               MSC-S
              1)IAM
            -------->
                     2)MAP Send Routing
                      Information
                      ------------->
                                   3) MAP Provide Roaming 
                                      number
                                      --------------->

                                    4) MAP provide roaming 
                                        number(MSRN)  
                                                           
                
                                      <----------------

                     5)MAP send routing 
                     information(MSRN)
                     <---------------
                      6)IAM(ISUP
                      --------------------------------->
 
Is This Answer Correct ?    23 Yes 9 No
Telecom_tester
 
  Re: gsm call flow for MS to SMS? and GSM call flow fro MS to roaming MS?
Answer
# 2		 
First SMS is submitted to SMSC. than it is forwarded from
there to SMS gateway. SMS Gateway retrrives Routing info
from HLR and send it to MSC. MSC gets current location from
VLR of receipent mobile and delivers Msg.
 
Is This Answer Correct ?    7 Yes 1 No
Balar
 
 
 

 
 
 
Other Telecom Protocols Interview Questions
 
  Question Asked @ Answers
 
gsm call flow for MS to SMS? and GSM call flow fro MS to roaming MS? IMI-Soft-Engineering2
What is protocol testing. whether u have used any tool in telecom testing. TelCom8
what is the significance of SGM (segmentation) message in ISUP? Ericsson1
can u explain call flow for roaming mobile to roaming mobile?(both users are belongs to same state but staying on roaming in different states) IMI-Soft-Engineering1
How is the environment working in telecom protocols?. i mean does we have to work manually with bytes calculation? or there will be a ready tool which we just need to take report n compare?. i have idea to this course? but i dnt knw what going to do with this jobs? please give me informations that can be used? n how is the scope for this? IBM1
What is the need of CPG message in ISUP protocol? ZTE2
Hi I am Ramesh JTO BSNL want to know about the TEMS, a telecom testing tools for GSM and which is the best cdma protocol testing tools ie AGILENT or CAIT or CNT.Whether these have same function.What are the institutes providing these courses. BSNL1
 
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