I think it's only to increase the sound of the horn to be able to here it in the loud traffic noise also.
There are many websites where one can find the price of a Citroen DS3. One can find prices of a Citroen DS3 on the "Carwow" website, as well as on the "What Car?" website.
DS3 is 44.7 Mbps and a T1 is 1.55 Mbps. So 1 DS3 = 28 T1s http://www.dslbroker.com/ds3.html
A DS3 has 28 T1's http://techblog.intelletrace.com/what-is-a-ds3-hub/
3 ds3 in stm1
A DS3 can do 45Mbps Bidirectional Simultaneously.
how many DS3's are in an OC192
I invented the car horn
672 DS0 make 1 DS3
an OC48 has 48 DS3's.
Push the car horn button....
What is the decibel level of a car horn?
T3 is the same as DS3. DS3 is a 45Mbps Data Circuit