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Nick vs Networking is a website focused on telecommunications network engineering, providing insights, tutorials, and information related to the field.

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Performance analysis reveals that while Maps are faster for smaller datasets, ETS outperforms them with larger datasets in Elixir.
Troubleshooting interop testing for a new UPF revealed that bandwidth limitations were preventing successful SIP registration due to gated ACK packets.
The post discusses a technical scenario involving Kamailio, a SIP server, where the author seeks to configure the Via header to use different IP addresses based on the destination of the requests. The author explains the challenge...
An MVNE's PGW-C session drops were caused by attempting to create multiple PDN sessions for the same subscriber on the same APN, leading to confusion in session management.
The post discusses an issue with certain devices failing to include the IMS Communication Service Identifier (ICSI) in the Contact header during IMS registration while roaming, leading to mobile termination (MT) call failures. It ...
The blog post discusses a technical issue encountered while testing international roaming for IMS APN connectivity in the US. The author describes the process of troubleshooting the failure to attach to the IMS APN, detailing the ...
The post discusses the process of creating and loading Unprotected Profile Packages (UPPs) onto physical SIM cards using eSIM technology. The author shares their experience with tools like PySIM and MiniLPA to explore and manage e...
The post explains how emoji reactions to SMS messages work, particularly focusing on the technical details of how Android formats these reactions. It breaks down the hexadecimal representation of the message and discusses the impl...
Packet buffering in the UPF is crucial for managing downlink data delivery to UEs in Idle mode, particularly during Mobile Terminated VoLTE calls.
The post discusses the complexities of data usage charging in CGrateS, particularly focusing on how the system deducts charges based on usage increments. It explains the concept of RatingSubject, which allows users to define how d...
The post argues that telecom companies should focus on improving core connectivity services rather than pursuing trendy tech transformations that distract from their primary mission.
The post outlines how HLR and SMSc communicate regarding message delivery notifications for offline subscribers, highlighting key flags and their implications.
The article explains the relationship between Sh Profile, XCAP data for call forwarding/barring, and RepositoryData within the Diameter Sh interface. It details how Application Servers (AS) interact with the Home Subscriber Server...
The Network Repository Function (NRF) is a database that manages information about Network Functions (NFs) on a network. It includes three main services: Nnrf_NFManagement for managing NF records, Nrf_NFDiscovery for querying thes...
Network Instance is crucial in PFCP for Packet Detection Rules, overshadowing APN/DNN in traffic matching decisions.
A React Web UI tool is introduced to streamline CDR management tasks for users familiar with CGrateS, offering various functionalities for data manipulation.
Using SIP headers in FreeSWITCH allows for clearer communication of hangup reasons when rejecting calls.
A comprehensive guide on importing global Digital Elevation Models into Forsk Atoll for RF modeling, focusing on the Copernicus DEM and OpenTopography data.
The post discusses a hidden feature in Android's Carrier Config manager that allows telecom operators to report signal strength as one bar higher than it actually is. This undocumented flag, used by AT&T and Verizon, raises concer...
The author discusses an email from ACMA regarding exemptions for certain devices used during significant events like the MotoGP at Philip Island. They reflect on the separation of tasks in their own work and question why motorbike...
The post discusses the capabilities of CGrateS in performing inline regex replacements, providing examples of how to manipulate phone numbers and domain names using regular expressions. It highlights the process of stripping chara...
This post details how to utilize osmfilter to extract specific geographic layers from OpenStreetMap for integration into Forsk Atoll.
The post provides a straightforward guide on how to back up data from CGrateS using Redis and MySQL/MariaDB. It details the commands needed to create backups of both databases, including using 'mysqldump' for MySQL and copying the...
The author discusses a persistent issue with Visual Studio Code (Vscode) where printing large amounts of data to the terminal causes significant unresponsiveness and high CPU usage. They compare the performance of Vscode with Ubun...