Multi-Tech Systems FR111 - Manual (Page 78)

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access circuit. Set the DLCI to indicate the PVC to terminate the trunk. The
range of DLCIs is from 16 to 1007 with a default of 16.
The Committed Info Rate (CIR) option determines the data transfer rate
at which the network is committed to handle under normal conditions.
This rate is the average over a minimum increment of time. The CIR
may be less than or equal to the Access Rate. When the CIR is ex-
ceeded, but the data rate is below the Excess Burst Rate (Be), there is a
possibility that data may be discarded. When the Be is exceeded, data
will most likely be discarded. The default CIR is 32K.
The Excess Burst Rate (Be) option defines the maximum allowable
data transfer rate the MultiFRAD can exceed the Committed Info Rate
(CIR) during a time interval. The Be is the maximum additional data rate
at which the MultiFRAD can present to the network during a time
interval. The default Be is 24K.
The Management Type option defines a set of procedures and mes-
sages to manage PVCs and the physical link at the user network
interface. Three management types are used: Local Management
Interface (LMI), Annex A, Annex D. The management type is determined
by the network at subscription time.
The Polling Interval option defines a time period (T391) in which a Status
Enquiry message is sent from the MultiFRAD to the network. The Status
Enquiry message requests the status of the PVC(s) or verification of the
status of a physical link. When the Status Enquiry message is sent by the
MultiFRAD, the Polling Interval is restarted. The network responds with a
status message that reports the status of the PVC or verifies the integrity of
the physical link. The polling interval is 5 to 30 seconds with a default of 10
seconds.
The Full Status Counter option determines how many Polling Intervals take
place before a full status (N391) is sent from the network. A Full Status
Enquiry message is sent from the MultiFRAD to the network requesting
status reports of all the PVCs on the physical link.
The Error Threshold Count option is used to indicate the threshold
number of errors occurring during a full cycle of the Monitored Event
Counter. After each full cycle of the Monitored Event Counter, if the
actual number of errors equals or exceeds the error threshold, the trunk
status is brought down and no data may be sent. The error count is
reset at the beginning of each cycle of the Monitored Event Counter. The
Error Threshold Count can range from 1 to 10 with a default of 3 and