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12 Private Networks Secure and Transport
Published in Wes Simpson, Video Over IP, 2013
For IP services, the standard customer interface is either a 10/ 100BaseT Ethernet interface or a gigabit Ethernet interface. These well-established protocols can operate over wired or optical fiber interfaces. Multiple traffic streams can share a single network interface—packets for each destination receive VLAN (virtual local area network) tags and can easily be separated at the entry point to the network. In many instances, all of the services for a particular customer are routed through a single CPE (customer premises equipment) router at the customer's end of an Ethernet link to the carrier, which connects directly to a PE (provider edge) router located in the carrier's facility.
The Data Center Manager’s Guide to Networked Imaging Systems
Published in Steven F. Blanding, Enterprise Operations Management, 2020
Access to SMDS is provided via dedicated lines. On each access line, the required customer-premises equipment consists of a router with an SMDS interface and a CSU/DSU (channel service unit/data service unit) with an SMDS interface. A DXI provides standardized connectivity between the two devices, while a LMI permits the CSU/DSU to pass performance information to the router so it can be sent to a SNMP-based management workstation.
Supply chain investment and de-escalation of capacity competition
Published in International Journal of Production Research, 2021
Shu-Jung Sunny Yang, Kai-Yu Hsieh
We focused on leading Taiwanese manufacturers in three specific segments of the IT industry: personal computers, mainboards, and network devices. As our theoretical model highlights the interdependence between competing firms, these three industry segments have two attractive properties. First, most firms in the three selected segments specialised in a main product line: laptops, desktop mainboards, and local area network devices (including customer-premises equipment), respectively. On average, revenues from a sample firm’s main product line accounted for 67 percent of its total revenues. Second, our sample firms collectively held a dominant global share of the three main product lines: the Institute for Information Industry reported that Taiwanese IT firms supplied over 90 percent of these specific products worldwide in 2010. Because our sample firms specialised in a certain product of which they collectively held a dominant global share, they identified each other as major rivals and thus reacted to each other’s investments in mainland China. Additionally, because of the salient role played by these firms in the global IT product industry, our empirical setting is important in its own right.