bond market index calculation

How are bond market indexes are calculated? What is pricing (trader priced vs market priced)? And also weighing (Price vs Market value)

pricing = trader priced weighting = market value i have no idea why. i just remember seeing a chart on this in the fi section of the cfai book.

i think since bonds trade otc the traders price the index. b/c not as much relevant t&s as compared to equity… also the weight in the index is the market weight… the only difference in pricing is when the index is a treasury index then i believe it is also market priced b/c it will be more reliable…