Timers And Counters - AT&T MERLIN LEGEND Release 3.0 Programming Summary Manual

Timers and Counters

Timers and Counters
Use this procedure to set timer and counter thresholds.
CAUTION:
The factory settings for these thresholds are standard and rarely need to
be changed. If you are not sure of the correct timer and threshold
settings for your PRI lines and trunks, check with your authorized
support representative before you make a change. Incorrect settings
can cause your PRI lines and trunks to malfunction.
If the network does not respond before the programmed time or count, the
system takes the appropriate corrective action.
The timers and counters are listed below.
T200 Timer. Times the delay in the link layer acknowledgement of a
message sent from the system to the network over a D-channel.
T203 Timer. Times the interval between each exchange of messages
between the system and the network on the D-channel.
N200 Counter. Counts the number of times the system has transmitted
a message on a D-channel because no link layer acknowledgement is
received from the network.
N201 Counter. Counts the maximum number of layer three octets the
system can send or receive in a single D-channel message.
K Counter. Counts the number of layer three unacknowledged
messages sent from the system to the network on a D-channel.
T303 Timer. Times the delay in network response when the system
sends a setup message to initiate an outgoing call.
T305 Timer. Times the delay in network response when the system
sends a disconnect message to clear a call.
PRI Facilities 9-11