HSL Mobile Networks have key skills in service operation, software engineering, SS7 and GSM telecoms and RF planning. We design and build GSM network elements for use in a range of applications for mobile network operators and service providers, and develop mobile services for use on HSL's network. We are committed to ensuring resilience and reliability in the innovative infrastructure and services that we provide, and maintaining quality customer relationships with our customers around the world.

HSL's Mobile Networks division develops infrastructure including the following network elements:

The HSL GSM Essential software suite includes basic GSM network elements. These include an MSC/VLR, SMSC and HLR/AuC. The HSL GSM Essential software suite is provided free for non-commercial use.