Signings fell 14 percent from a year earlier to $10.5 billion during the first quarter, causing Wall Street analysts to grill the company on the reason for the decline during an earnings conference call.

“I realize that one quarter signings don’t make a trend, but it looks like your last four quarters trailing signings are actually down,” Sanford Bernstein analyst Toni Sacconaghi told IBM’s chief financial officer, Mark Loughridge, during the conference call.

Loughridge said that signings are not a good predictor of future revenue. Instead he said investors should focus on order backlog, which was up six percent at the end of the quarter at $142 billion.

The world’s largest technology services firm managed to beat expectations for first-quarter profit and revenue, even though it does about 11 percent of its business in crisis-stricken Japan.

That was partially because of strong performance in the red-hot markets of Brazil, Russia, India and China, where revenue was up a combined 26 percent from a year earlier.

“These numbers show IBM’s resiliency. They beat on just about every area I had hoped,” said Ted Parrish, co-portfolio manager of the Henssler Equity Fund.

International Business Machines Corp raised its forecast for full-year profit, excluding items, to at least $13.15 from its previous view of at least $13.00.

IBM benefited from strong demand for the latest version of its mainframe computer, which it introduced in the third quarter of last year. Sales of that product were up 41 percent from a year earlier.

The company also reported first-quarter profit, excluding items, of $2.41 per share, ahead of the average analyst forecast of $2.30, according to Thomson Reuters I/B/E/S.

Revenue rose 8 percent from a year earlier to $24.6 billion, beating the average analyst forecast of $24.0 billion.

“The concern is they didn’t really guide a whole lot higher than they had originally for the year, if you take into account the earnings surprise,” said Fort Pitt Capital Group senior analyst Kim Caughey Forrest.

“That’s a little disappointing.”