Unstructured Supplementary Service Data or “USSD” is the stack used in Cellular Networks to offer interactive text based menus and systems to Subscribers. If you remember topping up your mobile phone credit via a text menu on your flip phone, there’s a good chance that was USSD*. For a period, USSD Services provided Sporting Scores, […]
Searching with CouchDB in Python
The #Telecom reading list for this year; including books on Submarine Cable Systems, the history of Cable & Wireless, Alcatel Lucent’s downfall and SS7.
A look at taking SS7 traffic and putting it onto IP / SIGTRAN links on the MTP2 / Layer 2 level.
This post is one of a series of packet capture analysis challenges designed to test your ability to understand what is going on in a network from packet captures.Download the Packet Capture and see how many of the questions you can answer from the attached packet capture. The answers are at the bottom of this […]
Quirks and gotchas of working with SMS on IMS on iPhones.
Build instructions for YaTE
Using Redis with Kamailio
Using FreeSWITCH as an IMS Application Server
Short mystery regarding cloned Ubuntu VMs with different MAC Addresses being allocated the same IP Addresses by DHCP.
A brief look at International Signaling Point Code numbering and what it all means.
Getting from Point Code A to Point Code Z.
Setting up our GNS3 environment with a bunch of SS7 Nodes
Looking at the basic components that make up our SS7 Networks.
Taking a look at the basics of the SS7 Protocol Stack.
Quick reference guide for the types and capacities of Huawei BBU 3900 Series cards
A look at how Dedicated Bearers get established for VoLTE.
Some tricks to handle if you’ve got multiple headers all with the same name in Kamailio
Quick intro to setting up Wireguard interfaces in Mirktok’s RouterOS.
Starting calls from FreeSWITCH