下一代网络与传统网络的区别

1. 下一代网络：
简而言之，下一代网络被称为 NGN，它是一种用于电话和数据的基于数据包的网络。它使用多种宽带和服务质量 (QoS) 支持的传输技术来建立先进的通信系统。 NGN 可以在单一平台上处理多种类型的服务/流量，例如语音、音频、视频和其他多媒体。所有这些数据都以数据包的形式传输。

在NGN传统网络被广泛使用之前，下一代网络开始取代传统网络系统。这是电信对传统网络系统的巨大架构演变和创新。它主要基于互联网技术，包括互联网协议(IP)和 H.323 协议是下一代网络的主要组成部分。

2. 传统网络：
传统网络是基于时分复用 (TDM) 的。传统的网络工作基于一些固定函数，是指专用的网络设备，如交换机和路由器、MPLS交换机、以太网交换机等，大多数网络类型是传统网络，仍在组织和企业中使用。当数据通信日益增长，网络设备的数量也在以这种速度增加时，管理大量固定函数的网络基础设施设备以及控制人为配置错误变得日益困难。

这种传统网络需要积极的人工管理来进行管理，但在 NGN 中可以虚拟地和动态地完成。主要是传统网络需要昂贵的硬件，而且通常是基于硬件的。它已经服役很长时间了。为了增加网络容量，传统网络需要实施新的硬件，这就是为什么它比不需要新硬件设置来增加网络容量的 NGN 成本更高。

下一代网络与传统网络的区别：

S.No.	NEXT GENERATION NETWORK	TRADITIONAL NETWORK
01.	Next Generation Network is Internet Protocol (IP) based.	Traditional Network is TDM based.
02.	It uses different control and signalling and protocols such as Internet Protocol, Multi Protocol Label Switching etc to support different multimedia services.	It uses standard Signalling System No 7 (SS7) signalling.
03.	Next Generation Network uses packet switching.	Traditional Network uses circuit switching.
04.	In NGN bandwidth is acquired and released as it is needed.	In TDM bandwidth is reserved in advance as the bandwidth is fixed for call.
05.	Next Generation Network set up cost is low.	Traditional network set up cost is high.
06.	It is designed for intermittently data transmission.	It is poorly matched for bursty transmission and more towards continuous stream of transmission.
07.	During idle means when there is no communication then no resource is consumed.	Dedicated path is reserved for the duration of call.
08.	In NGN, Vendors can implement and customize the services and applications.	In Traditional network services and features depend on vendor implementation.
09.	These network use distributed switch functions with standard open interfaces between transport, control and applications.	These network use switch function in single box.
10.	It supports variable information (voice, data, multimedia) transfer.	It supports non-variable information transfer.
11.	Multiple services can be achieved in one platform i.e through IP.	Multiple services (voice, data, video) requires different platforms.
12.	In Next Generation Networking system we can choice network elements from multiple vendors.	In traditional networking system switching between vendors occurs depending upon provided features and performance.
13.	These Network are cost effective and requires less expansion cost.	These Network are less cost effective compared to Next Generation Network and requires expansion costs.