Category: Telecom Architectures

Network characteristics like architecture nodes and flows of Telecom Networks

Legacy Telecom Networks

Characteristics of Legacy Systems PSTN (Public Switched Network) TDM ISDN (Integrated Service Digital Network) Services of Legacy Telecom Networks I use the term legacy telecom system many a times , but have not really described what a legacy system actually is . In my conferences too I am asked to just exactly define a legacy … Continue reading Legacy Telecom Networks

SIP/VOIP transformation towards IMS (Total IP)

Upgrading a softswitrch solutions to IMS Intelligent Networks( IN) Fixed/mobile convergence(FMC) with IMS Legacy to IP transformation WebRTC based Unified Communication platform Challenges in Migration to IMS  (Total IP ) The telecommunications industry has been going through a significant transformation over the past few years. At the outset incumbent operators used to focus on mainly basic … Continue reading SIP/VOIP transformation towards IMS (Total IP)

Service Broker Architecture for IN and IMS

Service BrokerAdvantages of using Service Broker vs Total Migration from In to IMSProvisioning via fixed/mobile brands «service profile» in Service BrokerArchitecture of SDP / Service Broker Service Broker We know that a Service broker is a service abstraction layer between the network and application layer in a telecom environment. SB( Service Broker ) can enable … Continue reading Service Broker Architecture for IN and IMS

Internet Telephony Convergence- JAINSLEE Platform

Convergence : Telephone networks and computer networks converging into single digital network using Internet standards. Components in a Network Client computer Server computer Network interfaces (NICs) Connection medium Network operating system Hub or switch Routers- Device used to route packets of data through different networks, ensuring that data sent gets to the correct address Figure :simple computer … Continue reading Internet Telephony Convergence- JAINSLEE Platform

Business Challenges for a telecom service provider

With the fast pace of telecom evolution both towards the access network front ( ie GSM , UMTS , 3G , 4G , LTE , VOLTE ) to core network side ( ie application servers , registrar , proxies , gateway , media server etc ) a CSP ( content service provider ) is trying hard to keep up with the user expectation . The user expects a plethora of services , reduced cost and high speed bandwidth . If this was not enough a CSP also has competition OTT ( Over The Top ) Players who provide communication and messaging for FREE .

IMSSF and RIMSSF

This post particularly describes the gateways in IMS which communication back and forth with a legacy endpoints.To get a overview of IMS itself click here  and to get a detailed description of IMS and its architecture click here . What is IM-SSF  ? IP Multimedia Service Switching Function is a  gateway to provide IN service such … Continue reading IMSSF and RIMSSF

Realtime Communication (RTC) platform

How easier would it be if there was an infrastructure that could connect all devices all communication protocols, old legacy PSTN phones, VOIP ones like SIP all the PBXs of the world, GSM handsets even the very new WebRTC! I have assembled my thoughts on an ideal communication platform in this blog post. Functional Req … Continue reading Realtime Communication (RTC) platform

VoIP/ OTT / Telecom Solution startup’s strategy for building a scalable flexible SIP platform

Scalable and Flexible platform. Let's go in-depth to discuss how can one go about achieving scalability in SIP platforms. ulti geography Scaled via Universal Router, Cluster SIP telephony Server for High Availability, Multi-tier cluster architecture, Role Abstraction / Micro-Service based architecture, uted Event management and Event Driven architecture , Containerization, autoscaling , security , policies and market differentiator, ticketing and issue tracking.

IP Multimedia Subsystem (IMS) – detailed part2

This is a folow up on my previous post on IMS which described what is IMS and why it came into existing. Also how IMA can benifits with its rich feature set and huge OPEX savings. To read the previous post click here . This post described IMS architecture and core concepts in detail. IMS … Continue reading IP Multimedia Subsystem (IMS) – detailed part2

VPN ( Virtual Public Network ) over SIP

VOIP across an SSL-based VPN is achieved in good quality by encapsulating the UDP VOIP packets ( SIP and RTP ) in TCP/IP . Data used for defining a VPN like its Groups, its Members and the associated profiles is organized hierarchically.It includes information like who is the operator, subscriber of VPN, group ID and member ID.

Service Broker 2

As CSPs evolve their networks for LTE, the resulting networks present tremendous challenges in voice services and application delivery. Realizing this opportunity, the telecom software industry has come forward with a purpose-built network element: the Service Broker, a solution specifically designed to overcome network architecture challenges and ensure voice service delivery from any network domain to any other network domain. Service Brokers are placed between the application layer and the control layer.

IP Multimedia Subsystem (IMS)

Why IMS ?What benefits does IMS bring ?Features of IMS NetworkIMS LayersTransport / Media Endpoint LayerBackhaul networkBorder GatewaysSession & Control LayerHSS (Home Subscriber Server)SCF (Call Session Control Function)MGw (Media Gateway Control Function)Application Services LayerTAS (Telephony Application Server)IM-SSF ( IP Multimedia Services Switching Function)OSA-GW (Open Service Access Gateway)IMS-architectureIMS standalone architectureInteroperable IMS core for heterogeneous access networks … Continue reading IP Multimedia Subsystem (IMS)

IMS in EPC ( Evolved Packet Core )

Packet Switched and/or Circuit swicthed Communication The earlier models were distributed between legacy circuit switched networks and evolving packet switched networks Sources : NEC eNB SGW E-UTRAN PDG MME With the massive improvents in quality of network srevices packet switched comunication protocls became more resilent and replaced the circuit swicthed protcols for realtime communication. LTE … Continue reading IMS in EPC ( Evolved Packet Core )