SIMM Single In-Line Memory Module
A way to memory (MEMORY) chip (CHIP) welding on the surface of the circuit board modules, making installation and removal of memory chips for easy installation of more direct. SIMM data width of 32-bit (BIT), while a new technology known as the DIMM memory modules, data width of 64-bit.

Single-Density Disk
Old single density floppy disk (FLOPPY DISK), now can not buy a.

SIP multimedia communication system
SIP (Session Initiation Protocol)
In addition to SIP phones can be used to establish a network of applications, also with other Internet technologies, such as HTTP, SMTP, RTSP  and so on combine to provide integrated voice and other multimedia communications services, such as instant messaging (Instant Messaging) and Personal betray oneself (Presence) services.
SIP has been recognized as the IP network and traditional PSTN telecom network integration of key technologies, and it was third-generation mobile communication systems (3G) wireless multimedia communications for the future adoption of technical standards.

SLA (Service-Level Agreements)
In fact because enterprises to service quality and data security concerns, leading to business IT outsourcing often hesitate, but also looking forward to fear hurt. In this case, enterprises and service providers, businesses want to achieve win-win situation, we must at the enterprise customers and industry in the formal establishment of commercial relations before service-level agreements negotiated and signed, the nature of the agreement is similar to civil law of contract contract, in which both sides must be clearly defined service expectations and requirements, that is necessary to define the service content and service levels. In this way, to ensure enterprise customers get satisfaction in IT outsourcing services.
As just mentioned, the purpose of service level agreements is a clear description of the industry can provide acceptable service to corporate customers expectations, so the implications for a wide spectrum, from the scope of its services and responsibilities, security, network performance, Support Services to violate the standard of service penalties after and so on, below the standard of service agreements should be included in projects.