February 15, 2021

Meet Cellusys at WAS#13 2021

March 16-18 2021 – 24 Hour Virtual Event

Experts from across the mobile ecosystem come together to address challenges and opportunities that arise from the transforming mobile landscape.

What is the best thing about virtual WAS? It opens early! If you are a registered GSMA member, register to attend and come stop by our virtual booth.  

Did you know we are offering training on a variety of signalling topics, to suit every level of knowledge? See below for details or contact us here to schedule a session.

Our award-winning Steering of Roaming system is getting a major upgrade: Integrated analytics provides real time visibility of subscriber data usage for both inbound and outbound roamers. This information can be used to detect silent roamers, group subscribers by data usage, reconcile billing, make VoLTE steering decisions, and most importantly: provide accurate indications of network data quality for steering decisions, and negotiating leverage.

Fraud is a hot topic since the Covid-19 pandemic hit; everything from call fraud to smishing seems to have ramped up in the midst of the crisis and operators are looking for ways to keep up. Cellusys is putting a sharp focus on fraud solutions in 2021. Call control protects against IRSF, Wangiri, and Sim boxes, Fraud Insight defends your network against app-based SIM boxes, DNS fraud, and other IP-based attacks. Zero Trust SMS is a solution for smishing that scans every URL and delivers SMS containing links with either a verification of security, a warning, or a notification of blocked access due to a security risk. TelePort allows an easy solution for anti-fraud vendors to tap into mobile network traffic.

Book a meeting with us now to find out how we can make your network more secure, intelligent, and profitable.
  • Start: Tuesday 16 March 2021
  • End: Thursday 18 March 2021
  • Venue: 24-hour Virtual Event
  • Exclusive Member Event

WAS is a bi-annual event held by the GSMA Wholesale Agreements and Solutions Group, which works with interoperability (roaming and interworking). WAS#12 was scheduled for this time last year in Cape Town, but was rescheduled for 2021 in light of the pandemic, and has now been made a virtual event. 

We hope to get down to see Table Mountain and the penguins again soon though!


Cellusys are excited, once again, to offer free training sessions covering a wide variety of industry topics during WAS#13. Based on overwhelming positive feedback from everyone who took part in these training sessions in previous WAS events, we are happy to share our knowledge and insight once again. 

Catering to all delegates, whether you are new to the industry and want a crash course in fundamentals or looking to build upon your existing knowledge base. Our telecoms expert Steve DeVries, who has over 40 years of experience in the industry will be hosting 30 minute customised sessions covering topics that you are most interested in. These sessions are focused entirely on education and do not include any coverage of Cellusys products or services. 

Our knowledge base is technical in nature and focuses on how networks are built and interact with one another. We would like you to get the most out of these sessions, so please reach out to us and let us know your topics of interest and your level of expertise so we can tailor material specifically to you. A suggested list of topics is outlined below to highlight some of the areas that we can cover, however we are happy to cover other topics not listed also:


  • The Mobile Telecom Industry
  • Mobile Network Generations
  • Mobile Network Basics
  • Introduction to Network Signalling


  • Roaming Basics (Contracts, Testing & Launch)
  • Technical Roaming for Roaming Managers


  • Signalling Across Generations (1G to 5G)
  • SS7
  • Diameter
  • GPRS Tunnelling Protocol (GTP)
  • Session Initiation Protocol (SIP)

Network Security

  • Overview of Attacks and Industry Response

Hot Topics

  • 2G/3G Sunset
  • Voice in 4G and 5G
  • 5G Rollout
  • SMS Over IP / SMS Evolution

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February 15, 2021