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CALLER RING BACK TONE BACHELOR OF TECHNOLOGY


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Introduction:


Caller Ring Back Tone Services is an innovative service giving mobile subscribers the ability to replace their standard ring back tone with music clips, sound effects, jokes, news or personalized voice greeting.

Distinction between CRBT and other value added services is that, this service is independent of both handset and Subscriber Identity Modules (SIMs).



Mobile Switching Centre


Responsible for routing voice call & sms
Sets up and release the end to end connection
Supplementary services like conference call & hold call
Hand over
Billing
This has different names in different contexts
G-MSC
V-MSC
Anchor MSC
Target MSC


Advantages:


Multiple Ring Back Tones
Gifting CRBT
Support SMS, IVR, USSD, WEB interfaces for subscriber provisioning.
Random CRBT Play
Priority Settings
Copying CRBT
Time Specific CRBT


Disadvantages:


Subscribers have to pay lots of money to utilize this service.
Telecom operators have to maintain a separate server.
Maintenance cost