MNO
Mobile Network Operator – A mobile operator/carrier that owns the cellular network infrastructure.
MSISDN
Mobile Station International Subscriber Directory Number – The mobile phone number, including the country code and national destination code.
MVNO
Mobile Virtual Network Operator – A wireless communications services provider that does not own the wireless network infrastructure over which it provides services to its customers. Read more at Wikipedia
NaaS
Network as a Service – Network provided as a service to subscribers by a network service provider on a pay-as-you-go basis.
NAC
Network access control, or NAC, solutions support network visibility and access management through policy enforcement on devices and users of corporate networks. Learn More
NOC
Network Operations Center – A centralized location to remotely monitor network components such as server, switches, routers etc.