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Welcome New MEF Members
Inquiries: +1 310-642 2800
LSO Sonata APIs enable frictionless inter-carrier business operations.
Introducing LSO Sonata
A set of APIs based on the
LSO Reference Architecture for
Serviceability  | Ordering | Quoting
Billing assurance | Testing
Change management | Address Validation
Get Started
Get Involved
Technical Specification
IPS (Information Models)
Coming soon!
  • Develop with hackathons & implementation projects
  • Architect & enhance the info models & specs
  • Collaborate with the industry
MEF’s LSO (lifecycle service orchestration)
From subscriber intent to service realization, fully automated, within and between operators.
LSO Sonata - The Start of a Journey
1st Priority – Order Management Automation
  • Reduce service set-up time
  • Deliver open standard API for inter-carrier connectivity
  • Based on TM Forum open API framework
Addressing Inter-Carrier connectivity
  • Interlude: MEF18 Survey: Rapid adjustments to existing services (90%)
  • Cantata: MEF18 Survey: Customers to scale bandwidth on demand (86%)
  • Blockchain: How do CSPs exchange information in a trustless environment?
  • Matching East-West with North-South capabilities
Offering Enhancements
  • Working with carriers and technology suppliers to further enhance the LSO Sonata offering.
LSO Sonata is a part of the LSO Reference Architecture