Which of these are not true facts about "The Big 5"?

McGinn was asked to temporarily serve as Lucent's CEO instead of Schact when the company struggled.

In Berlin, Siemens manufactured the first electronically controlled telephone exchange.

Ericcson started off as a company focused on repairing telegraph instruments.

Nortel was discontinued due to bankruptcy.

In the year of 2007, NTT established a local subsidiary in Malaysia and Thailand.