APLMGR SCF Reference Manual

Objects for Tandem FTAM

OSI/FTAM and OSI/APLMGR SCF Reference Manual—421943-001

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SU Object

An SU (subdevice) object provides access to an FTAM association made through a

Tandem initiator or responder process. SU objects are used to manage FTAM

subdevices. Figure 2-4

shows the differences between initiator and responder

subdevices, and their relationship to subdevices in underlying subsystems.

Naming Conventions for the SU Object

The SU object is named by appending a single qualifier (su-name) to the process

name, as follows:

SU [\system-name.]$process-name.#su-name

su-name is the subdevice name created dynamically by the APLMGR or responder

process.

The APLMGR process creates FTAM initiator subdevice names in response to

application requests. All initiator subdevice names consist of “#Z” and six digits. The

APLMGR keeps an internal count of initiator requests and uses that count to assign

numeric identities to initiator subdevices starting with 000001. The FTAM responder

process also uses a counter to generate subdevice names internally. Responder subdevice

names consist of “#ZF” and five digits starting at 00001.

Figure 2-4. Tandem FTAM Subdevices

009CDT .CDD

Responder

TAPS

TSPTSP

TAPS

Initiator

User

Application

= subdevice

Tandem

FTAM

OSI/AS

OSI/TS