SAP Note 12550 - Problems with remotely connected printers (WAN)

Symptom:

The print output from remotely connected printers can terminate occasionally or often. The printers are connected by means of a relatively slow line (for example, 9,600 baud).

The printers are connected with access method 'U' or ' S'.

(This note does not apply if the data is already controlled by the host spooler - in other words, if access method 'L' is used).

Other terms

WAN

Reason and Prerequisites

Timeouts occur during the data transfer.
The minimum throughput is 1 kbyte per minute for the LPD connection.

Solution
a) A faster network connection will help.

b) If the host spooler supports remote printers (HP-UX, AIX, SOLARIS,
ULTRIX, OSF/1, and so on), the data can be routed through there.
The host spool is not sensitive to timeouts on the connections.

c) If you use SAPSprint (see Note 894444), you can
use parameter s_packet_size to set a packet size smaller than
1,000 (the default). See Note 85469 for more information.

d) As of SAP Release 2.2B/2.1H,
300 seconds are available for each packet by default. You can use the
profile parameter "rspo/tcp/timeout/read" to increase this time.