Chicago-South Asia
Hello, How are you?
Fine, thank you. How are you? ____
And Phone get disconnected.
From Chicago to South Asia.
At&t Service provider.
Call, call, call and call.
No connection, Again call.
Landline, Cell phone.
No connection.
Two issues are there.
Quality of connection, at a point we need.
Per minute International call rates.
What do we do?
What are the solutions?
What is the best solution?
Global System for Mobile communication
GSM Mobile
What is SMS (Short Message Service)?
What are IS-54 and IS-136: TDMA?
What is IS-95: CDMA?
How CDMA Works
What is iDEN (Integrated Dispatch Enhanced Network)?
What is GSM?
The GSM Network
GSM Network Elements
Enlarged diagram click here
GSM Network Areas
Network Areas
Test
1. Right now, GSM is the accepted cellular standard in ____________.
a. Europe
b. South America
c. North America
d. Southeast Asia
e. all of the above
2. Which area of the world first deployed cellular services for commercial use?
a. Scandinavia
b. Central America
c. Western Africa
d. Central Asia
e. Eastern Europe
3. Modulation refers to __________.
a. the distance between the uplink and downlink frequencies
b. the separation between adjacent carrier frequencies
c. the process of changing the characteristics of a carrier frequency
d. the number of cycles per unit of time
4. Which of the following are not telephony services supported by GSM?
a. dual-tone multifrequency
b. voice mail
c. fax mail
d. call waiting
5. What is the basic service unit of cellular telephony?
a. location area
b. cell
c. PLMN service area
d. MSC/VLR service area
6. The first cellular systems were ___________.
a. analog
b. digital
7. The location area is the area in which a subscriber can be paged.
a. true
b. false
8. The idea of cell-based mobile radio service was formulated in the Nordic countries in the early 1970s.
a. true
b. false
9. GSM provides requirements for analog cellular service.
a. true
b. false
10. The home location register (HLR) is a database used for storing and managing subscriptions.
a. true
b. false
11. The authentication center (AUC) provides authentication and encryption parameters that verify the users identity and ensure the confidentiality of each call.
a. true
b. false
12. The message center (MXE) is the node that provides intelligent network services.
a. true
b. false
13. The PLMN service area is an area served by one network operator.
a. true
b. false
14. GSM utilizes the code division multiple access (CDMA) concept, rather than time division multiple access (TDMA).
a. true
b. false
How is encryption utilized in GSM?
What algorithm is utilized for authentication in GSM networks?
What algorithm is utilized for encryption in GSM networks?
What algorithm is utilized for key generation in GSM networks?
What are the components of a GSM network
What are Ki, Kc, RAND, and SRES?
How do Authentication and Key generation work in a GSM network?
Have the A3 and A8 algorithms been broken?
Have the A5 algorithms been broken?
What are locking and unlocking?
What is an IMEI?
How can I find my IMEI?
What is an IMSI?
What is a TIMSI?
What are the PIN and PUK?
How do I change my PIN and PUK?
How do I use CallerID?
What is a Subscriber Identity Module (SIM)?
How is encryption utilized in GSM?
What algorithm is utilized for authentication in GSM networks?
What algorithm is utilized for encryption in GSM networks?
What algorithm is utilized for key generation in GSM networks?
What are the components of a GSM network?
What are Ki, Kc, RAND, and SRES?
Have the A3 and A8 algorithms been broken?
What are locking and unlocking?
What is an IMEI?
How can I find my IMEI?
What is an IMSI?
The IMSI (International Mobile Subscriber Identity) is a unique (__)-digit code used to identify an individual.
What is a TIMSI?
Communications |
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