DT-6XXX IP-SPOOL Application User’s Manual – Build 12.004/13/06 Datatek Applications Inc. 13application on the specified instance#, which may be in the range of 1 through 302,inclusive.After the IP-SPOOL application is operating, the administrator configures the IP-SPOOLapplication by connecting to the administrative interface for this particular IP-SPOOLinstance. The TCP port number would be at 10,000 + the instance#. Configuration of theIP-SPOOL application involves entering the shared RFC1179 printer’s IP address and thecapture timeout period.7.2 OPERATIONThe IP-SPOOL application listens for a call to its “virtual printer” TCP port. A device thatpreviously had a connection to a dedicated printer may then make a connection to thatTCP port. This connection is permanent.3When data arrives on the “virtual printer” connection, it will be forwarded to the sharedprinter via the RFC1179 protocol (assuming the shared printer IP address is defined). Thisis done after the configured capture timeout period has elapsed, or when a high-watermark in the spooling buffer has been reached.After the shared printer acknowledges receiving all data sent to it, or a user-configurabletimeout window has elapsed, the connection to the shared printer is disconnected. Thetimeout prevents a “hung” connection in the case where the acknowledgement from theprinter was not received, thus allowing other IP-SPOOL instances, as well as any otherhost, to attach to the shared printer.2 For the DT-6260, the range is 1 to 48.3 Referring back to the example network shown earlier in this document, each DT-4XXX port to which an NEprinter interface is connected would have its PDD redirected to an instance of the IP-SPOOL application (DT-6XXX IP address + “virtual printer” TCP port). Similarly, the IP-B2APRT application would be re-configured to redirect its output to a “virtual printer” instead of a physical printer.