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Configuring SVC Parameters
Configuring SVC Attributes
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0517-15
3. When you finish, choose Close to return to the Configure SVC dialog box.
T398 (ms) Enter how long to wait for a response after a DROP PTY PDU has
been sent. The default is 4000 msec.
T399 (ms) Enter how long to wait for a response after an ADD PTY PDU has
been sent. The default is 14000 msec.
Q.SAAL
Holdoff Time
(sec)
Enter the amount of time the ATM signaling holdoff timer holds off
the re-establishment of the ATM signaling connection after you
modify a physical or logical port or after a physical port alarm is
detected. This mechanism essentially converts signaling ATM
adaptation layer (SAAL) reset conditions into SAAL failure
conditions (also described in Q.2931). The default is 35 seconds.
Note: For PNNI logical port types, the default value for Holdoff
Time is zero (0) seconds. Configuring a value higher than zero (0)
may result in an extra delay of 30 seconds in establishing logical
group node (LGN) SVCCs between neighboring LGNs.
Max CC
Threshold
Enter the maximum number of transaction retries for control
PDUs. The default is 4.
Max PD
Threshold
Enter the maximum number of data PDUs without a POLL. The
default is 25.
Max Stat
Elements
Threshold
Enter the maximum number of missing elements in a STATUS
PDU. The default is 67.
TCC (ms) Enter the retry time for control PDUs. The default is 1000 msec.
TIdle (ms) Enter how often a poll is sent when Q.SAAL is idle. This parameter
does not apply to UNI 3.0 connections. The default is 15000 msec.
TKeep-Alive
(ms)
Enter how often a poll is sent when the Q.SAAL is in the transient
state. The default is 2000 msec.
TNo-Response
(ms)
Enter the maximum amount of time that can pass without a
STATUS PDU being received. The default is 7000 msec.
TPoll (ms) Enter how often a poll is sent when the Q.SAAL is active. The
default is 100 msec if this port uses the UNI 3.0 or Interim
Inter-switch Signaling Protocol (IISP) 3.0 ATM protocol; the
default is 750 msec for all others.
Window Size Enter the maximum number of unacknowledged PDUs that can
exist at any time. The default is 32. If you decrease this value, peer
signaling slows down.
Table 17-4. SVC Signaling Tuning Dialog Box Fields (Continued)
Field Action/Description
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