Jetdirect
Encyclopedia
JetDirect is the name of a technology sold by Hewlett-Packard
that allows computer printers to be directly attached to a Local Area Network
. The "JetDirect" designation covers a range of models from the external 1 and 3 port parallel print servers known as the 300x and 500x, to the internal EIO print servers for use with HP printers. The JetDirect series also includes wireless print server (Bluetooth
, 802.11b and g) models, as well as gigabit Ethernet
and IPv6
-compliant internal cards.
and Token Ring physical layer variants and used various networking protocols over an AUI
/BNC
connection. Initially, a printer needed a separate card for each protocol, such as TCP/IP, IPX/SPX
, AppleTalk
, or DLC
/LLC
. The most common communication uses TCP
port 9100. The following year the team applied the technology to the legacy accessory slot on the LaserJetIIs and IIIs (XIO) XIO
(Extended Input/Output). Not until 1994 would MIO interface cards be released that could support more than one protocol per card.
The next development releases added connection interfaces. In 1992, a card with both 8P8C modular telephone and BNC
connectors for Ethernet was released, and in 1993, the first external JetDirects were introduced with a parallel interface. This enabled JetDirect cards to connect to almost any printer, making that printer network-capable. In 1995, the Ex plus 3 was released, with 3 parallel ports on one network interface, allowing 3 printers to share 1 network address.
1997 saw the new numbering format for both internal and external JetDirects. Internals began the 6xx series with the release of the 600n, multi-protocol card that supported TCP/IP, IPX/SPX, DLC/LLC, and AppleTalk over a token-ring
network; along with the 1760x series external print server
- also multi-protocol. An Ethernet version of the 600n was released in 1998. In 1999, the JetDirect autoswitch was introduced.
1998 also saw the release of 170x, the first value-line print server aimed at smaller companies that did not necessarily need full networking - only TCP/IP or IPX/SPX support. This was followed in 2000 by the JetDirect 70x home print server.
Soon afterwards, HP began to do a per-item replacement policy that has ended as of October 31, 2008, when all known 615n cards were at least 4 years old and at such time HP felt it had taken appropriate corporate responsibility for a defect in manufacturing.
The 615n cards most often affected were the units installed in the Laserjet 2300, 4200 and Color 4600 series. Those cards appear to be most prone to failure.
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. If it is proven to be the chipset, HP would be able to replace the card under warranty with an as-new card (nominally a 620n) which can save the customer upwards of US$350 at current (2007?) retail prices. http://www.hp.com/go/hp-jetdirect/615n-info
. The LIO backplane technology is based on a low power/low-voltage (< 1-volt) differential signaling technology.
compliant network adapter for network-ready parallel or USB printers. (Discontinued)
core with an Apache Web Server. Once connected to the network, the device is able to manage up to 50 print shares with any supported network-ready printer, not just HP products. (Discontinued)
Hewlett-Packard
Hewlett-Packard Company or HP is an American multinational information technology corporation headquartered in Palo Alto, California, USA that provides products, technologies, softwares, solutions and services to consumers, small- and medium-sized businesses and large enterprises, including...
that allows computer printers to be directly attached to a Local Area Network
Local area network
A local area network is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building...
. The "JetDirect" designation covers a range of models from the external 1 and 3 port parallel print servers known as the 300x and 500x, to the internal EIO print servers for use with HP printers. The JetDirect series also includes wireless print server (Bluetooth
Bluetooth
Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...
, 802.11b and g) models, as well as gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second , as defined by the IEEE 802.3-2008 standard. It came into use beginning in 1999, gradually supplanting Fast Ethernet in wired local networks where it performed...
and IPv6
IPv6
Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...
-compliant internal cards.
History
The JetDirect was first introduced in March 1991 (code named QuickSilver) with the LaserJet IIIsi network printer (code named Eli). JetDirect is based on HP's MIO (Modular Input/Output) interface, which was designed from the ground up with the IIIsi to create a mainstream full function high performance networked printer. The initial MIO interface card had EthernetEthernet
Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....
and Token Ring physical layer variants and used various networking protocols over an AUI
Attachment Unit Interface
An Attachment Unit Interface is a 15 pin connection that provides a path between a node's Ethernet interface and the Medium Attachment Unit , sometimes known as a transceiver. It is the part of the IEEE Ethernet standard located between the Media Access Control , and the MAU...
/BNC
BNC connector
The BNC connector ' is a common type of RF connector used for coaxial cable. It is used with radio, television, and other radio-frequency electronic equipment, test instruments, video signals, and was once a popular computer network connector. BNC connectors are made to match the characteristic...
connection. Initially, a printer needed a separate card for each protocol, such as TCP/IP, IPX/SPX
IPX/SPX
IPX/SPX stands for Internetwork Packet Exchange/Sequenced Packet Exchange. IPX and SPX are networking protocols used primarily on networks using the Novell NetWare operating systems.-Protocol Layers:...
, AppleTalk
AppleTalk
AppleTalk is a proprietary suite of protocols developed by Apple Inc. for networking computers. It was included in the original Macintosh released in 1984, but is now unsupported as of the release of Mac OS X v10.6 in 2009 in favor of TCP/IP networking...
, or DLC
Data Link Control
In the OSI networking model, Data Link Control is the service provided by the data link layer. Network interface cards have a DLC address that identifies each card; for instance, Ethernet and other types of cards have a 48-bit MAC address built into the cards' firmware when they are...
/LLC
Logical Link Control
The logical link control data communication protocol layer is the upper sub-layer of the data link layer in the seven-layer OSI reference model...
. The most common communication uses TCP
Transmission Control Protocol
The Transmission Control Protocol is one of the core protocols of the Internet Protocol Suite. TCP is one of the two original components of the suite, complementing the Internet Protocol , and therefore the entire suite is commonly referred to as TCP/IP...
port 9100. The following year the team applied the technology to the legacy accessory slot on the LaserJetIIs and IIIs (XIO) XIO
XIO
XIO is a packet-based, high-performance computer bus employed by the SGI Origin 2000, Octane, Altix, Fuel and Tezro machines. The XIO forms a bus between high-performance system devices and the memory controller....
(Extended Input/Output). Not until 1994 would MIO interface cards be released that could support more than one protocol per card.
The next development releases added connection interfaces. In 1992, a card with both 8P8C modular telephone and BNC
BNC connector
The BNC connector ' is a common type of RF connector used for coaxial cable. It is used with radio, television, and other radio-frequency electronic equipment, test instruments, video signals, and was once a popular computer network connector. BNC connectors are made to match the characteristic...
connectors for Ethernet was released, and in 1993, the first external JetDirects were introduced with a parallel interface. This enabled JetDirect cards to connect to almost any printer, making that printer network-capable. In 1995, the Ex plus 3 was released, with 3 parallel ports on one network interface, allowing 3 printers to share 1 network address.
1997 saw the new numbering format for both internal and external JetDirects. Internals began the 6xx series with the release of the 600n, multi-protocol card that supported TCP/IP, IPX/SPX, DLC/LLC, and AppleTalk over a token-ring
IBM token ring
thumb|Two examples of token ring networks: a) Using a single [[Media Access Unit|MAU]] b) Using several MAUs connected to each otherthumb|Token ring networkthumb|IBM hermaphroditic connector with locking clipthumb|An IBM 8228 MAU...
network; along with the 1760x series external print server
Print server
A print server, or printer server, is a device that connects printers to client computers over a network. It can accept print jobs from the computers and send the jobs to the appropriate printers....
- also multi-protocol. An Ethernet version of the 600n was released in 1998. In 1999, the JetDirect autoswitch was introduced.
1998 also saw the release of 170x, the first value-line print server aimed at smaller companies that did not necessarily need full networking - only TCP/IP or IPX/SPX support. This was followed in 2000 by the JetDirect 70x home print server.
615n series
In 2002 HP released the 615n series of Internal EIO print server. This model featured a new chipset manufactured in Singapore that had a problem related to either overheating or data overload. Otherwise known as the ASIC issue, this meant the 615n card could fail without warning, and when it failed, would completely shut down, appearing to vanish from the printer entirely.Soon afterwards, HP began to do a per-item replacement policy that has ended as of October 31, 2008, when all known 615n cards were at least 4 years old and at such time HP felt it had taken appropriate corporate responsibility for a defect in manufacturing.
The 615n cards most often affected were the units installed in the Laserjet 2300, 4200 and Color 4600 series. Those cards appear to be most prone to failure.
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. If it is proven to be the chipset, HP would be able to replace the card under warranty with an as-new card (nominally a 620n) which can save the customer upwards of US$350 at current (2007?) retail prices. http://www.hp.com/go/hp-jetdirect/615n-info
External print servers
| Model number | Printer ports | Network ports | Network protocols | Firmware | Notes |
|---|---|---|---|---|---|
| EX Plus | One Parallel | 10Base-2 and 10Base-T | TCP/IP, IPX/SPX, and DLC/LLC | Flash EEPROM | BOOTP & DHCP Client |
| EX Plus3 | Three Parallel | 10Base-2 and 10Base-T | TCP/IP, IPX/SPX, AppleTalk, and DLC/LLC | Flash EEPROM | DHCP Client (not BOOTP) |
| 170x | One Parallel (IEEE 1284.4) | One RJ45 10Base-T 10BASE-T Ethernet over twisted pair technologies use twisted-pair cables for the physical layer of an Ethernet computer network. Other Ethernet cable standards employ coaxial cable or optical fiber. Early versions developed in the 1980s included StarLAN followed by 10BASE-T. By the 1990s, fast, inexpensive... Ethernet |
TCP/IP, IPX/SPX, and DLC/LLC | Non-upgradeable | Discontinued |
| 175x | One USB 1.0 | One RJ45 10/100Base-TX Ethernet | TCP/IP, AppleTalk, LPD Line Printer Daemon protocol The Line Printer Daemon protocol/Line Printer Remote protocol is a network protocol for submitting print jobs to a remote printer. The original implementation of LPD was in the Berkeley printing system in the BSD UNIX operating system; the LPRng project also supports that protocol... (Windows and Mac OS only) |
Non-upgradeable | Discontinued in favor of the en1700 |
| 300x | One Parallel (IEEE 1284.4) | One RJ45 10/100Base-TX Ethernet | TCP/IP, IPX/SPX, AppleTalk, and DLC/LLC, IPP, FTP | 2 MB | Four models have been made available: J3263A, the base model; J4101A, an OfficeConnect model designed to mimic the style of 3Com OfficeConnect equipment so that stacking it on top of such equipment is aesthetically pleasing; J4101B, an updated version of J4101A; and J3263G, a RoHS-compliant version of J3263A. All except the J3263G have been discontinued, but all still get firmware updates. |
| 310x | One USB 1.0 | One RJ45 10/100Base-TX Ethernet | TCP/IP, IPX/SPX, AppleTalk, and DLC/LLC | 2 MB | Discontinued in favor of the en3700 |
| en1700 | One USB 2.0 | One RJ45 10/100Base-TX Ethernet | TCP/IP, AppleTalk | 2 MB | Limited Firmware flashable for USB connectivity to certain HP printers |
| en3700 | One USB 2.0 | One RJ45 10/100Base-TX Ethernet | TCP/IP, IPX/SPX, AppleTalk, and DLC/LLC | 4 MB | Discontinued in favor of ew2500 |
| 500x | Three Parallel (IEEE 1284.4 | One RJ45 10/100Base-TX Ethernet, one BNC (10BASE-2) | TCP/IP, IPX/SPX, AppleTalk, and DLC/LLC | 2 MB | Discontinued in favor of the 510x |
| 510x | Three Parallel (IEEE 1284.4 | One RJ45 10/100Base-TX Ethernet | TCP/IP, IPX/SPX, AppleTalk, and DLC/LLC | 2 MB | Same product as the 500x, except no BNC connector and ROHS compliant, discontinued |
| wp110 | One Parallel (IEEE 1284.4) | One RJ45 10/100Base-TX Ethernet, Wireless 802.11b | TCP/IP, AppleTalk, IP Direct mode, telnet, SLP, IGMP, BOOTP/DHCP, WINS, SNMP, HTTP, Auto-IP, and Apple Rendezvous | 2 MB | Discontinued |
| 380x | One USB 1.0 | Wireless 802.11b | TCP/IP (IP Direct Mode, LPD, FTP File Transfer Protocol File Transfer Protocol is a standard network protocol used to transfer files from one host to another host over a TCP-based network, such as the Internet. FTP is built on a client-server architecture and utilizes separate control and data connections between the client and server... , IPP Internet Printing Protocol In computing, the Internet Printing Protocol provides a standard network protocol for remote printing as well as for managing print jobs, media size, resolution, and so forth.... ), IPX/SPX, DLC/LLC, and AppleTalk. Also NDS Novell eDirectory Novell eDirectory is an X.500-compatible directory service software product initially released in 1993 by Novell for centrally managing access to resources on multiple servers and computers within a given network... , NetWare Bindery, NCP NetWare Core Protocol The NetWare Core Protocol is a network protocol used in some products from Novell, Inc. It is usually associated with the NetWare operating system, but parts of it have been implemented on other platforms such as Linux, Windows NT and various flavors of Unix.It is used to access file, print,... , telnet, SLP, IGMP, BOOTP/DHCP, WINS, SNMP v1 and v2c, and HTTP |
4 MB | Discontinued in favor of ew2400 |
| ew2400 | One USB 2.0 | One RJ45 10/100Base-TX Ethernet, Wireless 802.11b/g | TCP/IP, IPX/SPX Direct mode, AppleTalk, IP Direct mode, LPD printing, telnet TELNET Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communications facility using a virtual terminal connection... , SLP Service Location Protocol The Service Location Protocol is a service discovery protocol that allows computers and other devices to find services in a local area network without prior configuration. SLP has been designed to scale from small, unmanaged networks to large enterprise networks... , IGMP, BOOTP BOOTP In computer networking, the Bootstrap Protocol, or BOOTP, is a network protocol used by a network client to obtain an IP address from a configuration server. The BOOTP protocol was originally defined in RFC 951.... /DHCP, WINS, SNMP Simple Network Management Protocol Simple Network Management Protocol is an "Internet-standard protocol for managing devices on IP networks. Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks, and more." It is used mostly in network management systems to monitor... , HTTP, Auto-IP, and Apple Rendezvous |
4 MB | Discontinued in favor of ew2500 |
| ew2500 | One USB 2.0 | 1 10/100Base-TX Ethernet, 1 802.11b/g Wi-Fi | TCP/IPv4, TCP/IPv6 IPv6 Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4... , AppleTalk, IP Direct Mode, LPR/LPD printing, FTP, IPP, IPX/SPX, DLC/LLC, Novell NetWare NDS, NetWare Bindery, Novell iPrint |
8 MB |
MIO
MIO (Modular Input/Output) was the first technology developed by HP for its laser printers to enable the addition of peripheral cards such as JetDirect.| Model number | Network ports | Released | Notes |
|---|---|---|---|
| C2059A | Ethernet Ethernet Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies.... Attachment Unit Interface Attachment Unit Interface An Attachment Unit Interface is a 15 pin connection that provides a path between a node's Ethernet interface and the Medium Attachment Unit , sometimes known as a transceiver. It is the part of the IEEE Ethernet standard located between the Media Access Control , and the MAU... (AUI), 10Base-2 |
October 1, 1991 | IPX/SPX IPX/SPX IPX/SPX stands for Internetwork Packet Exchange/Sequenced Packet Exchange. IPX and SPX are networking protocols used primarily on networks using the Novell NetWare operating systems.-Protocol Layers:... only, discontinued |
| C2059B | Ethernet AUI, 10Base-2 | October 1, 1991 | DLC/LLC only, discontinued |
| C2059C | Token ring DE-9 connector D-subminiature The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smaller connectors used on computer systems.... |
October 1, 1991 | IPX/SPX only, discontinued |
| C2059D | Token ring DE-9 connector | October 1, 1991 | DLC/LLC only, discontinued |
| C2059E | Ethernet AUI, 10Base-2 | October 1, 1991 | EtherTalk AppleTalk AppleTalk is a proprietary suite of protocols developed by Apple Inc. for networking computers. It was included in the original Macintosh released in 1984, but is now unsupported as of the release of Mac OS X v10.6 in 2009 in favor of TCP/IP networking... only, discontinued |
| C2059T | Ethernet AUI, 10Base-2 | October 1, 1991 | TCP/IP Internet protocol suite The Internet protocol suite is the set of communications protocols used for the Internet and other similar networks. It is commonly known as TCP/IP from its most important protocols: Transmission Control Protocol and Internet Protocol , which were the first networking protocols defined in this... only, discontinued |
| J2337A | 10Base-T 10BASE-T Ethernet over twisted pair technologies use twisted-pair cables for the physical layer of an Ethernet computer network. Other Ethernet cable standards employ coaxial cable or optical fiber. Early versions developed in the 1980s included StarLAN followed by 10BASE-T. By the 1990s, fast, inexpensive... , 10Base-2 |
November 1, 1992 | IPX/SPX only, Can be upgraded with J2546B SIMM, discontinued |
| J2338A | 10Base-T, 10Base-2 | November 1, 1992 | DLC/LLC only, Can be upgraded with J2546B SIMM, discontinued |
| J2339A | 10Base-T, 10Base-2 | November 1, 1992 | EtherTalk only, Can be upgraded with J2546B SIMM, discontinued |
| J2340A | 10Base-T, 10Base-2 | November 1, 1992 | TCP/IP only, Can be upgraded with J2546B SIMM, discontinued |
| J2371A | 10Base-T | April 1, 1993 | Can be upgraded with J2546B SIMM, discontinued |
| J2372A | 10Base-T, 10Base-2, LocalTalk LocalTalk LocalTalk is a particular implementation of the physical layer of the AppleTalk networking system from Apple Computer. LocalTalk specifies a system of shielded twisted pair cabling, plugged into self-terminating transceivers, running at a rate of 230.4 kbit/s... |
April 1, 1993 | Can be upgraded with J2546B SIMM, discontinued |
| J2373A | Token Ring DE-9 connector | April 1, 1993 | Can be upgraded with J2549B SIMM, discontinued |
| J2550A/B | 10Base-T | May 1994, November 1, 1996 | "A" version can be upgraded to "B" version with a firmware update, discontinued |
| J2552A/B | 10Base-T, 10Base-2, and LocalTalk | May 1994, November 1, 1996 | "A" version can be upgraded to "B" version with a firmware update, discontinued |
| J2555A/B | Token Ring DE-9 connector, RJ45 | November 1, 1996 | "A" version can be upgraded to "B" version with a firmware update, discontinued |
| J2556B | 10/100Base-TX | June 1, 1997 | Flash upgradeable, discontinued |
| J4100A | 10/100Base-TX, 10Base-2 | February 1, 2000 | Also known as the HP JetDirect 400n Print Server for Fast Ethernet, flash upgradeable, discontinued but not considered a legacy part in regards to firmware development |
| J4105A | Token Ring | February 1, 2000 | Also known as the HP JetDirect 400n Print Server for Token Ring, flash upgradeable, discontinued but not considered a legacy part in regards to firmware development |
| J4106A | 10Base-T | February 1, 2000 | Also known as the HP JetDirect 400n Print Server for Ethernet, flash upgradeable, discontinued but not considered a legacy part in regards to firmware development |
LIO
LIO (Low-end I/O) interfaces were developed by HP as a corporate response to the strictly internal MIO and EIO development path. The LIO interface differs from MIO/EIO in that the card is wrapped in an external plastic casing and is hot-swappableHot swapping
Hot swapping and hot plugging are terms used to describe the functions of replacing computer system components without shutting down the system...
. The LIO backplane technology is based on a low power/low-voltage (< 1-volt) differential signaling technology.
- 200N (C6502a) - Parallel with Centronics Interface
- 200m (J6039C) – 10/100 BASE-T (Supports only Windows and Apple Mac, fixed firmware)
- 250m (J6042B) – 10/100 BASE-T (Full support for Netware and Unix, firmware upgradeable)
- 280m (J6044A) – 802.11b Wireless
EIO
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.- 600n – 10/100BASE-TX/10BASE-2/LocalTalk (J3110A, J3111A, J3112A, J3113A) (Discontinued)
- 610n – Ethernet/Fast Ethernet/802.5, DB9, RJ45 (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) IPv6IPv6Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...
(J7997G) replacement for 625n - 635n – Ethernet/Fast Ethernet/Gigabit (10/100/1000BASE-TX, 802.3) IPv6IPv6Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...
/IPsecIPsecInternet Protocol Security is a protocol suite for securing Internet Protocol communications by authenticating and encrypting each IP packet of a communication session...
(J7961A, J7961G) - 680n – 802.11b Wireless (Discontinued)
- 690n – Ethernet/Fast Ethernet/Wireless (10/100BASE-TX, 802.3, 802.11b, 802.11g) IPv6IPv6Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...
/IPsecIPsecInternet Protocol Security is a protocol suite for securing Internet Protocol communications by authenticating and encrypting each IP packet of a communication session...
(J8007G) (New July 2008)
bt1300
The BT1300 is a BluetoothBluetooth
Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...
compliant network adapter for network-ready parallel or USB printers. (Discontinued)
- 2MB flash memory for software and print server upgrades
Print Server Appliance 4250
The Print Server Appliance 4250 is perhaps the most ambitious of the JetDirect products - being a complete printing facility in a box. The system comes ready to go with a pre-loaded and configured Print Server running on a LinuxLinux
Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...
core with an Apache Web Server. Once connected to the network, the device is able to manage up to 50 print shares with any supported network-ready printer, not just HP products. (Discontinued)
- 128MB onboard memory
- 20GB onboard HDD with 7GB available for print spool operations
- Supports up to 50 individual print queues or printer installs
- Allows up to 350 simultaneous client connections for enterprise printing
- Allows for updating and loading of print drivers from any source through an on-board web browser interface
- Supports both TCP/IP connections and LPDLine Printer Daemon protocolThe Line Printer Daemon protocol/Line Printer Remote protocol is a network protocol for submitting print jobs to a remote printer. The original implementation of LPD was in the Berkeley printing system in the BSD UNIX operating system; the LPRng project also supports that protocol...
connections (LPD for printing only) for communication to virtually any network-compliant printer