Date post: | 22-Jan-2015 |
Category: |
Business |
Upload: | dileep-pradeep |
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2. INTRODUCTION
3.
4. TYPES 5. LANDLINE
6.
7. MOBILE PHONES
8.
9.
10. VoIP
11. 12.
13.
14. SKYPE
15.
16.
17. 18. CONCLUSION
19. PRESENTED BY