Subscribed-Periodic-RAU-TAU-Timer
Nick Periodic Tracking Area Update timer purpose
2019
NBN FTTN Nodes in Disguise
Undercover FTTN.
The case for Header Compression in VoIP/VoLTE
Robust Header Compression (ROHC) and it's use for compressing RTP / VoLTE traffic headers.
Load Testing with SIPp
SIPp (a performance testing tool for SIP) to simulate many concurrent calls leading to many concurrent transcoding sessions.
Open5Gs- Python HSS Interface
Note: NextEPC the Open Source project rebranded as Open5Gs in 2019 due to a naming issue. The remaining software called NextEPC is a branch of an old version of Open5Gs.…
End of ISDN in Australia
Australia's largest carrier will begin disconnecting ISDN services, marking the end of circuit switched telephony in Australia.
Open5GS – Splitting Network Elements
Separating Network Elements (NEs) in NextEPC packet core.
Kamailio Bytes – DMQ
Using Kamailio's Distributed Message Queue to share memory data between Kamailio nodes
Kamailio Bytes – Transaction Module
Some TM (Transaction Module) use cases in Kamailio
Transaction Stateful Proxy with Kamailio
Basic example of a Transaction Stateful SIP Proxy in Kamailio
SIP SDP – ptime
SDPs ptime values, what it means, how it can go wrong and how to fix it.
Kamailio vs Asterisk
Comparison on Asterisk and Kamailio and where they fit in the Telephony landscape.
Kamailio Bytes – SDP Manipulation with SDPops
Manipulating SDP with Kamailio
SIP Extensions – Path
In vanilla RFC3261 SIP, a UA can only send a REGISTER request to a SIP Registrar. It can’t go via any intermediary proxies. That’s obviously a bit of a problem,…
Virtualized Transcoding Dimensioning
Load testing a standard VM to see how many RTPengine transcoding sessions it can manage concurrently
Building IBM Watson Voice Engine with Docker & Ubuntu 18.04
Building IBM Watson's Conversational Voice engine with Docker & Ubuntu 18.04
Kamailio Bytes – Stateless SIP Proxy
Basic Kamailio SIP Proxy
Kamailio Use Case – SIP Honeypot with SQL Database
Creating a Kamailio based SIP Honeypot
RTPengine Python API Calls via ng Control Protocol
Connecting to RTPengine via Python
Building Android APN / Carrier Config
How Android OS autoprovisions APN settings and how to set your own for your unique MCC & MNC.