Huawei eCNS600 integrates the subscriber management function of the system architecture evolution home subscriber server (SAE-HSS), the mobility management entity (MME) functions, the serving gateway (S-GW)/PDN gateway (P-GW) functions, and the policy control function of the policy and charging rules function (PCRF). The eCNS600 is operated and maintained in a centralized manner.
The eCNS600 uses the Advanced Telecom Computing Architecture (ATCA) platform and features large capacity and high integration, easy operation and maintenance, high reliability, flexibility, accurate time.

   * Large Capacity
The eCNS600 uses a high-speed forwarding processor to forward data on the user plane, which improves the processing efficiency and integration of the system. It also supports a maximum of 4 Gbit/s data transfer rate in the LTE system.

ATCA Platform
  * Hardware platform
  The eCNS600 uses the internal open standards telecom architecture (OSTA 2.0) platform of Huawei. Based on the ATCA technology, OSTA 2.0 provides high rate, high reliability, and high expansion capacity.

The OSTA 2.0 hardware platform stipulates a series of specifications related to boards and software for the next generation telecom devices. Based on the ATCA standard architecture and conforming to the network equipment building system (NEBS) and European telecommunications standards institute (ETSI) standards, the platform has the following features:
* High rate
The high-speed serial data link and switched structure are used.
* High reliability
All boards are hot swappable. In addition, redundancy is implemented on all key components, such as power supply, fan, management module, and board of each type. The reliability of the system reaches 99.999%.
* High expansion capability
The eCNS600 supports addition of interfaces on the ATCA board and cascading between subracks through the interface board within a subrack.
* Well management
The standard management bus is used, which can manage any part in the system.
* Software platform
The eCNS600 uses the embedded software platform, namely, carrier grade platform (CGP), which is universally used by the core network products of Huawei. The CGP has the features such as cross-hardware platform, cross-operating system, and easy maintenance.
* Cross-hardware platform
A uniform interface of the hardware platform is provided, which implements the operation of upper-layer applications on different hardware platforms. Thus, the hardware management is independent of the hardware platform.
* Cross-operating system
Different interfaces of the operating system at the lower layer are shielded. Instead, a uniform virtual operating system
application programming interface (VOS API) is provided for upper-layer applications.
* Easy maintenance
The implementation mechanisms of the functions such as operation and maintenance, alarm management, performance measurement, call and signaling tracing, data backup, board switchover, and online loading are provided for upper-layer applications.