3.4.30 Technical means of communication Estimated reading: 1 minute 194 views Authors Goal and purpose Telephone, mobile phone, call system, fax Application Description of the process Risks Resources Material Time required Documentation Responsibility and qualification Notes and comments Applicable documents Validation documents Terms Attachments 3.4 Resources - Previous 3.4.29 Operation and recovery after serious disruption to operations Next - 3.4 Resources 3.4.31 Operation of the network and its security