News & Blog

This post touches upon the 5G network functions (NFs) related to core network. Some of them look very similar to the corresponding functions in the previous generations’ core networks. This of course is not surprising, as the network always has to carry out some basic functions such as: communicate with the UE, store its subscription and credentials, allow access to external networks & services, provide security and manage the network access and mobility. However, we will also see some new functions, not present before, which are needed to enable the new network paradigms like slicing and service-based networking.
Marcin Dryjanski - one of the Grandmetric's founders, will be responsible for conducting a workshop, titled "5G Standards and Spectrum" during 5G World event in London, on June 12 2018. This will be the only place to get insight on what 5G standards are and the journey needed to get there.
This article is the first part in the series about SD-WAN technology where we learn step by step what exactly Software Defined WAN (SD-WAN) is, how to build and use it, how and why using this concept could be beneficial for enterprises or even service providers and how to transform the current enterprise WAN to a SD-WAN solution. We are going to start with looking closely at Cisco Viptela product, however later on, we will describe other SD-WAN platforms in a similar manner.
Narrowband Internet of Things (NB-IoT) is a secure, reliable, and efficient type of Low-Power Wide-Area (LPWA) Technology that was standardized by 3GPP in Release 13 (LTE Advanced Pro) and uses licensed spectrum.


This training guides the students through the Cisco ASA technology (ASA-OS) and the modern line of Next Generation products which is Cisco ASA FirePOWER Services.
This Guidepaper discusses the various Next Generation Firewall products available in the market that can be utilized for Medium scale enterprise.
This book examines the features of LTE-Advanced and LTE-Advanced Pro and how they integrate into existing LTE networks. Professionals find in- depth coverage of how the air interface is structured at the physical layer and how the related link level protocols are designed and work.
This unique course combines the theoretical foundations for the wireless transmission, and Wireless LAN standards together with the practical aspects ranging from measurement, planning and troubleshooting activities, to network design and configuration of the CISCO network devices.


Grandmetric is an IT&Telco Next Generation Consulting company providing technical as well as business insights along with technical trainings and advanced services specializing in wireless communications, IP networking and network security.

Mobile Networks

Mobile networks have been in spotlight since the introduction of LTE, back in 2009. Since then, there has been significant growth in mobile network technology at a very fast pace which includes introduction of Small Cells & Heterogeneous Networks (HetNets), Internet-of-Things (IoT), Self-Organizing Networks (SON), virtualization and 5G. Check how Grandmetric can help you to understand latest radio trends and to decide in future investments in technology.

Enterprise networks

There are huge range of technology aspects covering modern enterprises requirements. Starting with fundamental LAN and WAN connectivity, Internet Edges, Data Centers, mobility and collaboration and the data security and ending with the latest Software Defined Networks, Cloud directions managers, architects and engineers might be confused which way to go. Grandmetric with their expertise, enterprise experience and research help enterprises to transform.

Network security

Confidentiality of data, importance of service continuity and consistently growing online business makes Security number one topic in IT business. There are many approaches, products, visions and vendors that address some security challenges. Due to the research, analysis and comparative studies done by our team with strong security background and experience we know how to choose the best path to secure your network and services.


Board Member | Advisory Architect
Marcin Bialy
Board Member | Advisory Architect

Marcin is a Head of IP & Security areas in Grandmetric. He conducts Grandmetric authorized training and is heading research in IP and Network Security areas. Acting as a Board Member defines company’s strategy .
Board Member | Principal Consultant
Marcin Dryjanski
Board Member | Principal Consultant

Marcin is heading the mobile communications field in Grandmetric. He is heading technical consulting and research in 5G area and is responsible for defining company’s strategy and service portfolio in the area of mobile communications.

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