Dedicated Bearer setup in LTE and impact on VoLTE Precondition When a callee has been alerted by the provisional response, the chances of a session establishment failure are minimal assuming…

How an IMS network assigns and maintains an S-CSCF for a user When a user tries to register with an IMS network, it sends a REGISTER request to its P-CSCF.…

Globally Routable User Agent URI (GRUU) Several applications of the Session Initiation Protocol (SIP) require a user agent (UA) to construct and distribute a URI that can be used by…

Scala: Linearization technique to avoid multiple inheritance To support inheritance Scala has introduced a concept called trait, almost similar to Java Interfaces. But unlike Java Interfaces, Scala traits can actually…

Xamarin: Sample Push Notification Application using GCM service Summary Through this blog, I hope to be able to provide you with enough information to build a push chat notification application.…

My Experience with iWatch WatchKit is Apple’s framework for building hybrid apps for the Apple iWatch, and first came bundled with Xcode 6.2. WatchKit app contains 2 distinct parts: Apple…

Google Beacon Platform   Google Beacon platform consists of the following three components, Beacon device. Eddystone format. Proximity beacon API. Beacon device Beacon devices send one-way Bluetooth low energy(BLE) signals.…

How to extract MCC and MNC from IMSI stored in USIM As per 3GPP 24.003 section 2.2 & 2.3, the IMSI (International Mobile Subscriber Identity) is a unique number, assigned…

Scala: Tail Recursion Optimization and Comparison to Java Tail Recursion is supposed to be a better method than normal recursion methods, but does that help in the actual execution of…

Service Specific Access Control (SSAC) Under disaster or emergency events, the flood of simultaneous voice call requests is usually the main cause of network congestion. Hence, a limiting mechanism is…