$11 billion Nortel Networks Corp. has named Lisa Gressel as chief compliance officer, effective Jan. 1. She will replace Robert Bartzokas, who will be retiring.

Gressel is currently vice president of ethics and compliance for the Toronto-based company.

Also effective at the start of next year, Gordon Davies will become chief legal officer in addition to his current responsibilities as corporate secretary. David Drinkwater, current chief legal officer, will assume the role of senior advisor at that time until his retirement from Nortel on Feb. 28, 2009.