PMDF System Manager's Guide

PMDF-FAX is merely a collection of PMDF channel programs which run in a batch queue when processing mail messages. By default, the PMDF-FAX channel programs run in the same batch queue as other PMDF channel programs, MAIL$BATCH. This has two implications when the MAIL$BATCH queue is a generic batch queue processed by more than one member of a cluster. First, all machines which process this queue must have access to the FAX modem. Second, all machines which process the queue must have PMDF-FAX installed and enabled with a LMF PAK. Either of these requirements can easily be avoided by setting up a separate batch queue in which to process PMDF-FAX messages. This queue can then be isolated to those cluster members which both have access to the FAX modem and on which PMDF-FAX is installed. Use the queue channel keyword to tell PMDF to use a separate queue when processing the PMDF-FAX channels. For instance, if the queue FAX_BATCH is to be used, then the channel blocks from Example 37-13 previous section would be as in Example 37-15

Example 37-15 Assigning an Alternate Batch Queue

text_to_ps master queue FAX_BATCH text-to-ps.abc.com text-fax-a.abc.com text-fax-a.abc.com text-fax-b.abc.com text-fax-b.abc.com g3_to_fax master logging queue FAX_BATCH g3-to-fax.abc.com ps_to_g3_a master queue FAX_BATCH ps-to-g3-a.abc.com ps-fax-a.abc.com ps-fax-a.abc.com ps_to_g3_b master queue FAX_BATCH ps-to-g3-b.abc.com ps-fax-b.abc.com ps-fax-b.abc.com

If PMDF-FAX is installed on all cluster members who process the MAIL$BATCH queue, then only the G3_TO_FAX channel needs to be marked "queue FAX_BATCH" since that is the only channel which accesses the FAX modem.

The FAX_TO_DATA channel which processes incoming FAXes does not run in any batch queue; it instead runs as a detached process.