According to the Pilot/Controller Glossary,

TOWER EN ROUTE CONTROL SERVICE - The control of IFR en route traffic within
delegated airspace between two or more adjacent approach control facilities.
This service is designed to expedite traffic and reduce control and pilot
communication requirements.

TOWER TO TOWER-
(See TOWER EN ROUTE CONTROL SERVICE.)


"keepitrunning" wrote in message
. com...
This is my first post to this rec.aviation.piloting so forgive me if this
has been discussed before.

A friend of mine who is IFR rated said there used to be a term called
tower to tower to allow for an IFR clearance from one towered airport to
another. This type of clearance wasn't as complicated as a full blown
clearance. He thought that the name had been changed or that it was now
called something else. I googled some but could not find any reference
and not being IFR myself have no clue.

Any comments are appreciated.