how call flow happening
- 8 Answers
- 34294 Views
- Aricent, Black and Veatch, Ericsson, GTL, Idea, Kekran Mekran, I also Faced
- E-Mail Answers
Answer Posted / srinivas padamata
Call from Mobile Station to land line:
1. MS after dialing a number and press send key uses RACH to
ask for a signaling channel.
2. The BSC allocates a signaling channel, using AGCH.
3. The MS sends a call setup request through SDCCH, to the
MSC/VLR. Over SDCCH, all signaling takes place. This includes:
Marking the MS status as active in the VLR (if the MS status
is not updated earlier).
The Authentication Procedure
Ciphering
Equipment Identification
Sending the called Subscriber number to the network
Checking if the subscriber has service barring of outgoing
calls activated.
4. The MSC/VLR instructs the BSC to allocate an idle TCH.
The BTS and MS are told to tune to the TCH.
5. The MSC/VLR forwards the called number to an exchange in
the PSTN, which establishes a connection to the subscriber.
6. If the called subscriber answers, the connection is
established.
| Is This Answer Correct ? | 71 Yes | 12 No |
Post New Answer View All Answers
How to manufacture the cmos inverter?
How to format a memory card by using memory card?
hi i am rajini i want rrb previous question papers with answers can you tell please where i can get it
please somebody who have asked questions related to electronic and communication eng siemens 2010-2012 post here
send me few previous years section engineer question papers?..
Why are active filters preferred
How an ammeter can be changed to a voltmeter?
Explain what are the applications of an inverting amplifier?
what are differential gain and common-mode gain of a differential amplifier?
please send me last year question for executive tranees in ntpc on my email ID rajthakur2091@gmail.com
Define potential transformers?
difference btwn channel and carrier in telecom?
Explain the operating condition in scr.
What is the E1 & OmuSig?
What are chebushev filters? Explain?
