OOooops, some inter-vendor vocabulary issues…
Rex, in Alcatel, the “SDH” is a timeslot configured with 7 SDCCH subchannels + 1 SMS-CB (Cell Braodcast) subchannel. Check the cell timeslot configuration in the RNUSM “Cell Edit”.
Bijoy, the SDCCB is probably a cell braodcast subchannel, yeah ?
Rex (again), the cell broadcast is used to broadcast one SMS message to all the MS within one cell. It is usually broadcasting commercial advertisements.