The House is considering a bill that would make it more difficult for consumers to have their long-distance telephone service switched without permission.

The House Commerce Committee approved the measure Thursday on a voice vote without dissent. The Senate has passed a different version of the legislation, but it is uncertain whether Congress will act this year on a final bill to combat "slamming."Slamming - among the biggest sources of telecommunications com-plaints to regulators - is already illegal.

The House bill would act to prevent the practice from happening in the first place.