Transcoding with RTPengine and Kamailio
Nick Using RTPengine and Kamailio to transcode
May 2019
Kamailio Bytes – Siremis Installation
Installing the Siremis Kamailio web administration interface
SMS Security – Banks
The other day I got an SMS from my bank, one of the big 4 Australian Banks. BANKNAME Alert: Block placed on card ending in XXXX, for suspicious transaction at…
LTE (4G) – TMSI & GUTI
We’ve already touched on how subscribers are authenticated to the network, how the network is authenticated to subscribers and how the key hierarchy works for encryption of user data and…
LTE (4G) – EUTRAN – Key Distribution and Hierarchy
We’ve talked a bit in the past few posts about keys, K and all it’s derivatives, such as Kenc, Kint, etc. Each of these is derived from our single secret…
LTE (4G) – Ciphering & Integrity of Messages
We’ve already touched on how subscribers are authenticated to the network, how the network is authenticated to subscribers. Those functions are done “in the clear” meaning anyone listening can get…
LTE (4G) – Authenticating the Network
How LTE Subscriber authenticate the network
LTE (4G) – Authenticating Subscribers
LTE/4G's use of RAND and K to verify subscribers identity.
LTE (4G) – USIM Basics
Contents of a USIM, fields & their meanings and basics of EUTRAN authentication.
IMTx: NET02x (4G Network Essentials) – Mobility Management – 3. Processing Location Updates
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Mobility Management – 4. Changing MME and SGW
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Mobility Management – 2. Balancing Location Update Load
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Mobility Management – 1. Managing Location
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Management of Sporadic Data Flows – 3. Standby Modes
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Management of Sporadic Data Flows – 4. UE Triggered Service Request
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Management of Sporadic Data Flows – 2. UE Connection to the Network
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Management of Sporadic Data Flows – 1. Attach and Detach Procedures
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Management of Data Flows – 7. NAS and Global View of Protocol Stack
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Management of Data Flows – 5/6. S1AP Connection
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…
IMTx: NET02x (4G Network Essentials) – Management of Data Flows – 4. Transmitting Packets in a Tunnel
These are my lecture notes from IMT’s NET02x (4G Network Essentials) course, I thought I’d post them here as they may be useful to someone. You can find my complete…