You must know that it would have taken time going through regular channels.

"Only the regular channels," she said, suddenly staring at the patient sitting in the chair near the bed.

I know I'm not supposed to call you, that there's a regular channel for handling this sort of thing.

We didn't know if a message would get through by regular channels.

Why couldn't this new development have been put on regular channels?

It is essential you use our regular channels of information.

But you'll also want to know whether it's acceptable to go outside regular channels to get things done.

Was it made outside the regular channels of the procurement process?

Since regular channels didn't work, they would do it their way.

The two leaders have been in communication through regular diplomatic channels.