NComm White Papers, Primers, Briefs, Articles and Tools
The “for Rocket Scientist” series of white papers are written for a technically savvy person wanting to better understand the details of a specific technology
Ethernet Operations, Administration and Maintenance comprise the protocols and features defined in IEEE 802.3ah (now clause 57), IEEE 802.1ag, and ITU Y.1731. These standards allow network failures to be detected, and located, as well as additional tools to measure the performance of the networks. What to know the details on how Ethernet OA&M works? Check out the white paper.
SONET and SDH form the backbone of the conventional networks. They are capable of carrying T1/E1 traffic as well as data traffic. In addition, automatic protection switching (APS) adds reliability to product traffic when the optical facilities fail. What to know the details on how SONET/SDH as well as APS works? Check out the white paper.
T1 and E1 facilities have been around since the 1960s. They form the first level of multiplexing of analog voice facilities. From their early creation, the have been expanded to carry all kinds of traffic from voice to data services such as frame relay and ATM. Even with other competing technologies such as cable, T1 and E1 may be the only option for higher speed network connectivity in some areas. In fact, T1 is the most complex of the WAN technologies and there is a lot to know in order to understand all its features. Check out the white paper.
T3 and E3 are the third level in the North American and European multiplexing hierarchies. A T3 (aka DS3) can carry 28 T1s while E3 can carry 16 E1s. In addition to carrying T1s or E1s, T3 and E3 may be used for carrying high-speed data traffic such as frame relay. Did you know that T3 could carry E1s also? What to know more T3 and E3 details? Check out the white paper.
You just spent a good amount of time designing a new WAN interface product. Now you need to make sure everything works properly.So where do you start? You need to read this white paper.
Intel invented the Peripheral Component Interconnect (PCI) bus, which had a sweeping effect on the bus structures of the day. One of its most important features was that unlike its predecessors, it was an intelligent bus. Soon, all servers, workstations and personnel computers were equipped with a PCI bus. Here is a short walk thru the history of this important component.
The need for accurate, real time performance is driving a requirement for network clock synchronization in Ethernet networks. There are two main solutions to meet these challenges: Synchronous Ethernet (SyncE), and Precision Time Protocol (PTP). This white paper discusses both of these.
By Bill Matern from CommsDesign, Apr 20, 2004
An Excel spreadsheet that provides an approach for making the build vs. buy decision as presented by John Brandte at the Embedded Systems Conference (March 2005).