That's news to me.  The IBM KB doesn't mention it:

There is no guarantee that printers that support Remote Output Queues
(RMTOUTQs) will also support IPP (or vice versa). In order for a *LAN IPP
device description to work, the following hardware requirements must be met:

1 The internal network interface card (NIC) or external print server must
support the Internet Print Protocol (IPP). 
2 The internal network interface card (NIC) or external print server must be
at a firmware or microcode level that supports IPP printing. 
3 If the printer is connected to an external network adapter, it must be
connected using an IEEE 1284, bi-directional printer cable, and the print
server must be in BITRONICS, BI-DIRECTIONAL or ECP/MLC mode 
A number of printers and printer servers from a variety of manufacturers
support IPP, including certain models of IBM Infoprint printers, HP
JetDirect print servers, and Lexmark Marknet printer servers. For a complete
list of values for the RMTLOCNAME parameter for various print servers,
please refer to the following document:

Wonder if it was maybe requirement #3 above.


> -----Original Message-----
> From: Jeff Crosby [mailto:jlcrosby@xxxxxxxxxxxxxxxx]
> Sent: Friday, March 12, 2004 10:40 AM
> To: 'Midrange Systems Technical Discussion'
> Subject: RE: Printer device USRDRV program
> > IPP doesn't appear to require any special on the printer 
> > itself, just the print server.  With IPP print servers 
> > available for as low as $50-$60 that's what I'd be using if I 
> > needed to.
> According to IBM, IPP is required on the print server _and_ 
> the printer.  My
> tests supported that, I (with IBM Supportline help) could not 
> get it to
> work.
> -- 
> Jeff Crosby
> Dilgard Frozen Foods, Inc.
> P.O. Box 13369
> Ft. Wayne, IN 46868-3369
> 260-422-7531
> The opinions expressed are my own and not necessarily the 
> opinion of my
> company.  Unless I say so.
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