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gsm call flow for MS to SMS? and GSM call flow fro MS to
roaming MS?
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Answer / telecom_tester
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 ? | 61 Yes | 24 No |
Answer / balar
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 ? | 37 Yes | 10 No |
Answer / raghu
Here is the good article
<a
href="http://www.learntelecom.com/telephony/gsm/sms-in-gsm-network">http://www.learntelecom.com/telephony/gsm/sms-in-gsm-network</a>
| Is This Answer Correct ? | 2 Yes | 1 No |
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