Floyd Mayweather and Manny Pacquiao
Mayweather and Pacquiao will go head-to-head in the biggest grossing fight in history on 2 May.Getty Images

A conference call arranged for Manny Pacquiao ahead of his 2 May fight with Floyd Mayweather Jr lasted less than two minutes on Monday 20 April because the system couldn't handle the number of calls.

"There were so many calls the system blew," Top Rank spokesman Lee Samuels said. "We've used the same company for 10-15 years and this is the first time this has happened."

Pacquiao was on last question-and-answer call from Los Angeles before he arrives in Las Vegas for the fight. However, the only question he was able to answer was from a Top Rank PR person about how training camp was going, to which Pacquiao replied "very good."

Promoter Bob Arum became frustrated when the first caller in the queue wasn't someone who was supposed to be the person due to ask a question.

"Let's reorganise and do this call some other time, please," Arum said.

Samuels said there were so many people calling in that some were unable to get on the call. He apologised and said it would be rescheduled.

Mayweather is supposed to have his own conference call Wednesday.