factory = empathy_contact_factory_dup_singleton ();
contact = empathy_contact_factory_get_from_id (factory, account, id);
empathy_start_call_with_contact (contact);
factory = empathy_contact_factory_dup_singleton ();
contact = empathy_contact_factory_get_from_id (factory, account, id);
empathy_start_call_with_contact (contact);