This topic is a bit subjective as the best communication is one that suites the customers. For many customers that operate a complete NOC (Network Operations Center), it becomes the primary interface to receive such communications. As for the channel to be used, again, different customers prefer different channels depending on criticality of a service, expected response/further communication times in downstream, and the maturity levels of systems & processes.
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Jawwad Zaki
Telenor ASA
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