Suppress schism interferes with powers and effects from the telepathy discipline. When you manifest this power, you make a dispel check (1d10 + your manifester level, maximum +15) against each ongoing telepathy power in effect on the target creature. The DC for this dispel check is 11 + the power's manifester level. If you succeed on a particular check, that power is dispelled; if you fail, that power remains in effect.
In additional, if the target fails a Will save, any form of dual mind effect is disrupted for the duration of the power, including the effects of the schism power and any of the various host feats. In the Eberron setting, this effect works against both an Inspired's dual mind ability and a kalashtar's +2 bonus on saving throws against mind-affecting spells and abilities.
If the target is possessed, the possessing mind must make a save or become suppressed for the power's duration, in which case the target creature can act normally.
For the duration of the power, if the target attempts to manifest a telepathy power, he must make a manifester level check (DC 11 + your manifester level) or fail to manifest the power.
For every 2 additional power points you spend, the DC of the Will save increases by 1.