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JetDirect

In this article we will explore JetDirect in depth, analyzing its importance, its impacts and its influence on different aspects of daily life. JetDirect is a phenomenon that has attracted the attention of experts and scholars in different areas, since its relevance ranges from the personal to the global level. Throughout this article, we will examine the various aspects that make JetDirect a topic of interest and reflection, as well as the different perspectives from which it can be approached. In addition, we will delve into the implications that JetDirect has in different contexts and its potential to generate significant changes in society.

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JetDirect
JetDirect 600n card
ManufacturerHewlett-Packard
IntroducedMarch 1991 (1991-03)
TypePrint server
Connection

JetDirect is a line of external print servers formerly sold by Hewlett-Packard (HP). The JetDirect allows computer printers to be directly attached to a local area network.[1]

History

External print server JetDirect 170X with LAN and parallel printer ports

Protocols

More advanced versions of JetDirect supported a number of network printing protocols. However, the protocol that ended up being associated with it, the JetDirect protocol,[2] is its raw TCP/IP protocol sometimes referred to as Socket API or RAW. It is an extremely simple network printing protocol.[3] Submitting a print job can be done by netcating a file containing the page description language (e.g. PostScript, PCL) to the appropriate TCP port on the printer (default port is 9100). Information about the printer and job is simply sent to the client while the TCP connection is active. The port would reject connections if the printer is busy.[3]

AppSocket is a very similar implementation by Tektronix for Phaser printers, later sold to Xerox.[4] This protocol adds support for querying for printer status by non-printing users via a separate UDP port.[5]

Most JetDirect devices also came with, JetDirect Interface, a telnet interface for configuring the device or printer.[6]

External print servers

Internal print servers

EIO

JetDirect 610n card

EIO (Enhanced Input/Output) is a modular interface developed by HP for its printers to expand their capabilities. EIO does not just serve JetDirect cards, but EIO hard drives and the EIO Connectivity card for adding communication ports to the printers as well. EIO utilizes the 3.3V signaling technology of the Conventional PCI bus and is significantly more energy-efficient than MIO technology. EIO print servers will not work in LIO slots, nor will the LIO print servers work in EIO slots.

  • 1284B Parallel Card (J7972G) - Provides one Type C Mini-Centronics 36-pin parallel port.[7]
  • 600n – 10/100BASE-TX/10BASE2/LocalTalk (J3110A, J3111A, J3112A, J3113A) (Discontinued)
  • 610n – Ethernet/Fast Ethernet/802.5, DE9, 8-pin Modular (J4169A, J4167A) (Discontinued)
  • 615n – Ethernet/Fast Ethernet (10/100BASE-TX, 802.3) (J6057A) (Discontinued)
  • 620n – Ethernet/Fast Ethernet (10/100BASE-TX, 802.3) (J7934A, J7934G)
  • 625n – Ethernet/Fast Ethernet/Gigabit (10/100/1000BASE-TX, 802.3) (J7960A, J7960G) (Discontinued)
  • 630n – Ethernet/Fast Etnernet/Gigabit (10/100/1000BASE-Tx, 802.3) IPv6 (J7997G) replacement for 625n (Discontinued)
  • 635n – Ethernet/Fast Ethernet/Gigabit (10/100/1000BASE-TX, 802.3) IPv6/IPsec (J7961A, J7961G) (Discontinued)
  • 640n - Ethernet/Fast Ethernet/Gigabit (10/100/1000BASE-TX, 802.3) IPv6/IPsec (J8025A) [8]
  • 680n – 802.11b Wireless (Discontinued)
  • 690n – Ethernet/Fast Ethernet/Wireless (10/100BASE-TX, 802.3, 802.11b/g) IPv6/IPsec (J8007G) (Discontinued)[9]
  • 695nw - Ethernet/Fast Ethernet/Gigabit/Wireless (10/100/1000BASE-TX, 802.3, 802.11b/g/n) IPv6/IPsec (J8024A) [10]

615n series ASIC issue

Any 615n series card can fail, but it is up to HP to determine if the failure is due to the chipset or some other factor. HP recommended to call them or contact them through the Web site and they will proceed to do some simple troubleshooting steps to determine if the failure is due to the chipset or some other cause.[11]

Other JetDirect products

References

  1. ^ Craig Hunt (2002), TCP/IP network administration, "O'Reilly Media, Inc.", p. 255, ISBN 978-0-596-00297-8
  2. ^ "Using Network Printers". cups.org. Retrieved 2017-09-06.
  3. ^ a b Powell, Patrick A (26 Nov 2010). "Socket API". LPRng Reference Manual. 3.8.35. Retrieved 7 December 2019. The Socket API is a very flexible job transfer protocol. It is widely support by most Print Server manufacturers, with the Hewlett Packard JetDirect setting the de facto standard. The Socket API is extremely simple.
  4. ^ "Printing to a Xerox Multifunction Device Using Port 9100" (PDF). Xerox Multifunction Devices - Customer Tips. September 26, 2003. Retrieved 7 December 2019.
  5. ^ Powell, Patrick A (26 Nov 2010). "AppSocket TCP/IP Protocol". LPRng Reference Manual. Archived from the original on 2015-10-24. Retrieved 2017-09-06.
  6. ^ Powell, Patrick A (26 Nov 2010). "HP JetDirect Interface". LPRng Reference Manual. 3.8.35. Retrieved 7 December 2019.
  7. ^ "HP 1284B Parallel Card". Retrieved February 27, 2016.
  8. ^ "HP Jetdirect 640n Print Server". Retrieved February 27, 2016.
  9. ^ "HP Jetdirect 690n IPv6/IPSec 802.11g Wireless Print Server - overview and features". Archived from the original on December 28, 2008. Retrieved September 18, 2008.
  10. ^ "HP Jetdirect 695nw Print Server". Retrieved February 27, 2016.
  11. ^ "HP J6057A 615n EIO 10/100 Information". Archived from the original on June 9, 2011. Retrieved February 2, 2016.
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