- Bronze, 100 points or more
Hi every body!
Acoording to my book and responses to my past posts, telco provides the clocking to csu/dsu at each side.
How about if i have two sides one in newyork the other side is india and both need to be connected by T3 circuit? how will the clocking between two telcos ( one from telco in newyork and other from telco in india) be coordinated?
It is easy to have one telco providing clocking to both sides. But some times as in our case due to geograhpical locations, it is not possible to use same telco. Then the question is how the clocking issue is resolved when two different telcos are being used for Wan connection (T3) ?
Thanks and happy 4th of july to all of you!
Remembering back to my circuit provisioning days with foreign ITMC's.. When a circuit is ordered one long distance carrier owns the circuit and is responsible for the end to end validation of the circuit prior to handing it off to the customer. That carrier should coordinate with all the foreign and intermediate breakout points down the line to asure that the circuit passes all BERT and long traffic stressing tests from end to end. It is at this point that any clocking issues will be weeded out and resolved. However All carriers will provide a high stratum clock to use as a reference. On a T-3 to be safe you should clock from the line. You would use internal and or external if you are running straight copper within your own bldg or you know that the carrier has no active componants on the line and is a straight run (useally within close proximity)... I hope I answered your question and concern....