Envoy ACP/XF Configuration and Management Manual

WAN Subsystem Profiles and Modifiers for

EnvoyACP/XF

EnvoyACP/XF Configuration and Management Manual—429232-003

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Optional Modifier Descriptions

You can set or override this modifier by issuing a SETMODE 15 call in an application

or by issuing an SCF ALTER LINE command to the EnvoyACP/XF subsystem.

THRESHOLD

Specifies the total cyclical redundancy check (CRC) errors, command reject errors,

and retries that can accumulate before triggering a line-quality statistic report. The

report indicates an average value.

You can alter this modifier by issuing an SCF ALTER LINE command to the

EnvoyACP/XF subsystem but not by issuing a SETMODE procedure call in an

application.

Figure 3-12. T1TIMER and ABM Line

Default: 500

Units: errors

Range: 100 through 32767

VST024.vsd

TITIMER specifies how long the primary or secondary substation waits to receive

a response from the other station before sending an RR frame with the P-bit set.

ABM

Primary

Substation

Secondary

Substation

Primary

Substation

Secondary

Substation

I-Frame

RR Frame Sent with P-Bit

Set