(877) 334-9650
February 15, 2012

Thanks to continuous improvements in our data hosting systems and infrastructure, 1 EDI Source Outsourcing and EDI WebSource clients have enjoyed 99.99% uptime since September, 2010. That’s more than a year of “four 9s”, which exceeds even our own published goal of 99.9% uptime (“three 9s”) excluding maintenance.

While this achievement clearly exceeds our expectations for regular service, it does demonstrate that hosted EDI and B2B solutions from 1 EDI Source include an unparalleled level of business continuity. We maintain the technical resources, technology, action plans and services to ensure our clients’ data and business operations are protected at all times. This includes:

  • System redundancy including multiple active hosting facilities, internet connections, processing, power, and more.
  • Physical security systems which include video surveillance, card access, cooling systems, fire suppression systems, and more.
  • Data and system security by clustering our servers, firewalls, network, storage, and more, minimizing downtime even during maintenance.
  • 1 to 30 data symbol characters
  • Right row indicator symbol character
  • Trailing quiet zone

There is a standard structure used to build the data contained in the symbol that is similar to an EDI Transaction envelope with ANSI MH10.8.3, format “06” being the most common. The typical symbol starts with a header that informs the scanner that the bar code follows a specific format. Next in line are the data fields incorporated into the bar code separated by a defined delimiter. Last is a trailer indicating the end of the bar code. The PDF417 shown above contains the following data when scanned:

“[)>06 123456 (P) A93387Y665 (I) Protect From Freezing and Extreme Heat and Humidity (V) 22873445A9984657555 1+2+3+4+5+6 = 21 It was a dark and stormy night (ST) 987654321 “

Symbol Character Encoding

Each PDF417 symbol character consists of four bars and four spaces which totals 17 modules in width. Each bar and space can be from 1 to 6 modules in length. In theory it has 9×020 patterns. Each set of 929 patterns is called a cluster (character set). PDF417 only uses cluster number 0, 3 and 6.

Row Encoding

Each row uses character patterns from a single cluster. Adjacent rows use different clusters in the sequence 0, 3, 6, 0, 3, 6: Cluster number = (row number -1) mod 3) * 3. Each row starts with a left row indicator and ends with a right row indicator. These row indicators are characters based on row number, total number of rows, number of columns and the error correction level.

Error Correction Capacity

Each PDF417 symbol contains 2 to 512 error correction code words corresponding to error correction level 0 (lowest) to 8 (highest). Auto Correction allows the software to determine the level of correction to be used based on the data encoded.

Printing Considerations

A high resolution thermal transfer printer (dpi >= 200) will normally produce symbols readable by most scanners.

At 1 EDI Source, we provide label and printing resources for a wide variety of industries and applications. We can provide the technology and hardware to meet all of your label design and printing needs now and in the future.

To increase your EDI efficiency and up time Contact Us Today!