Can TP charge premium amount for a particular LCN? If that's the case, they may be demanding premium amount for 1555 slot and either of the broadcasters not interested to pay!
Alternatively, why can't Sony opt for moving Ten 4 HD & SD LCN's to 1447 & 1448. The channel do serve the Telugu audience as well & those slots can't be premium & are ready to occupy!
Don't know how many tp users remember it but same incident happened some years ago with Saam TV which was added on lcn 860 but removed immediately after few minutes of addition.