Greater control and security is required for costly equipment.

Even with costly equipment, something could get lost in the messy conversion.

With the old technology, phone companies use costly equipment that directs a call through complex switches to its destination.

However, with somewhat costlier equipment, the principle could also be readily adapted to music.

But the high-speed alternative involves costly equipment, which could be a major obstacle to success.

Commercial broadcasters are not eager for these developments, seeing them as involving costly new equipment.

Others provide increased accuracy at the expense of costly equipment and installations.

In each case, costly, energy-guzzling equipment is being replaced by nothing but plants.

Something like this already happens in Canada and Europe, where costly equipment is more restricted.

Most tests are done by referral on large, costly equipment in the offices of specialists.