The Rams planned to use electronic earplugs to drown out crowd noise Sunday at the Titans' stadium, but the NFL says that violates league rules.

The Titans notified the NFL after seeing an item on the Internet about Rams Coach Dick Vermeil's plans for offensive linemen to wear the earplugs that can be set to drown out all noise except the voice of QB Kurt Warner.

"I didn't know there was a rule against it," Vermeil said Thursday. "I thought innovation was a part of the game."

The NFL bars use of any electronic device on the field, with the exception of a coach-to-quarterback communication system.

The sold-out stadium, which seats 67,000, will be the largest crowd the Rams have faced on the road this season.

* SUSPENDED: Broncos DE Cyron Brown was suspended by the NFL yesterday for the next four regular season games for violating the league's substance abuse policy.

Brown, who joined the Broncos as a rookie free agent last year, will be eligible to return to the active roster Nov. 23, a day after the Broncos face the Raiders.

Broncos spokesman Jim Saccomano said he did not know what Brown did to violate the policy. Brown is the first Bronco to violate the policy, he said.

* EXTENSIONS: Browns LB Jamir Miller has agreed to a four-year contract extension. Financial details weren't released, but Miller reportedly agreed to a four-year extension worth between $18 million and $20 million, with a $6 million signing bonus, the Cleveland Plain Dealer and Akron Beacon Journal reported. . . .

Chargers DE Raylee Johnson has signed a five-year contract extension through 2004 that reportedly averages $3.1 million a year.