3.2 Proposed Hardware
Front-End IP Server
As seen in the system diagram shown in the previous sections, there will be several IP server interface with CMCC M-GMSC. The IP server itself shall serve for 2 major functions: -
1. Interface with CMCC Mobile Network
2. Perform standard ISUP Message Signal Handling
3. Ringring Playback
4. Various Ringring IVR functions (User Administration, etc.)
Each of the IP Server will be equipped with: -
1. E1 Interface (with IVR Capabilities)
2. SS7 Controller Card (to enable the SS7 ISUP Capability)
As per site, all the IP Server shall be running in load sharing mode, where it is assumed that CMCC network will evenly distribute all the Ringring related traffic to various IP servers.
Subscriber Profile Database Server
As shown in the diagrams (Figure 3.1-3.9), each of the installation sites shall have their own subscriber profile database, whereas these database shall be used for Ringring Subscriber profile database purpose. Each site's database shall only store their own city's Ringring Subscriber Profile information.
For Database Redundancy purpose, CRF (Continuous Roll Forward) Mechanism has been used for data redundancy purpose between the active and standby database server.
Web Server
Multiple web servers will only be installed at GuangZhou Ringring Platform. It is assumed that all the web traffic for Ringring will be centralized and redirected into these GZ web servers.
The web server's role is to hold various web pages for: -
1. Ringring Subscriber Profile Management Web Console (used by Ringring Service Subscribers)
2. Ringring SP System Operation and Management Web Console (Used by SP)
3. Ringring Content Management Console (Used by Content Provided and SP)
Both Ringring Service Subscribers and Ringring SP system administrator can maintain their own Ringring service profile and the system configuration via the above consoles.
The web servers shall be running in load sharing mode. A Level 4 Switch (Load Balancer) will be put in front of the web servers for distributing the incoming web traffic between the all web servers. In case of hardware failure at one of the web servers, the Level 4 switch is also capable of re-directing all web traffic to the active running web servers.
Firewall Server has also been included in the proposed solution for higher IP security purpose.
Centralized O&M Terminal
A centralized O&M Terminal will be provided centralized operational and maintenance of the GuangDong Ringring System purpose.
Audio Bank
The audio bank itself serves as a centralized storage for all Ringring voice and ringback tone file, there will be two different ways to maintain the RINGRING voice files: -
1. Centralized Voice File Access – where all devices (IP Server, Web Server, etc.) will obtain voice and ringback tone file directly from the audio bank
2. Centralized File Distribution – the audio bank will serve as a focal point for voice file update where system administration will update and upload new voice file to this audio bank first. And the audio bank will perform file synchronization with various devices periodically.
No. of ringtones which can be stored on the audio bank shall be depending on the hard disk space storage available at the audio bank.
The average file size of each individual ringtone is ~120K (15 sec long ringtone). Assuming that one single audio bank system will have a usable storage size of 500Gb. Therefore, the possible number of file to be stored on the audio bank is ~4000000 voice/ringback tone files.
In order to ensure high access performance of audio bank system, for Ringring DIY feature, it is recommended to limit the duration of each personal announcement to a duration of 15 seconds. Also, it is recommended to limit each subscriber to have only 1 personal announcement.
For the detail calculation of Audio Bank, please refer to appendix 1.
Misc. Accessories
Various miscellaneous equipments have also been included in the proposed solution: -
Housing Equipments: Equipment Cabinet
System Accessories: Keyboard, LCD Video Monitor, Mouse, and KVM Switch
Network Accessories: Ethernet Hubs, Ethernet Switches (Supporting Gigabit Ethernet Interface)
For detail hardware information, please refer to the next two sections (Section 3.2.1 & Section 3.2.2). |
