By Francesca Landini and Elvira Pollina TRENTO, Italy (Reuters) -Telecom Italia (TIM) will pursue a plan to split its landline network from its service operations to maximise asset value for all shareholders and cut its debt pile, the head of the company said on Sunday. Under pressure for years in its fiercely competitive domestic market, Italy’s former phone monopoly is seeking to revamp its business via a separation of its domestic fixed network assets to focus on consumer and commercial activities. As part of a preliminary pact sealed with Italian state lender CDP last week, TIM’s network a…