AT&T MERLIN LEGEND Release 3.0 System Programming Manual page 483

PRI Facilities
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.
T308 Timer. Times the delay in network response when the system
sends a release message to clear a call.
T309 Timer. Times the duration of a D-channel data link failure (a loss of
signaling for the entire PRI connection).
T31O Timer. Times the network delay following the receipt of a call
preceding message on an outgoing call.
T313 Timer. Times the delay in network response when the system
sends a connect message that indicates the completion of an incoming
call.
T316 Timer. Times the delay in network response when the system
sends a restart message to clear a B-channel.
NOTE:
If you enter an invalid timer value, the number you enter is truncated to the
closest valid value. For example, if you enter 45 for a counter that ranges from O
to 30, 4 is recorded as the counter value.
Table 4-1 shows the factory setting for each timer and counter and the valid
range for each threshold.
Programming Procedures
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