Lucent Technologies MERLIN LEGEND Release 5.0 System Programming Manual page 576

MERLIN LEGEND Communications System Release 5.0
System Programming 555-650-111
4 Programming Procedures
PRI Facilities
Timers and Counters
Use this procedure to set timer and counter thresholds.
!
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.
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).
T310 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.
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
Lucent Technologies representative before you make a change.
Incorrect settings can cause your PRI lines and trunks to malfunction.
4
Issue 1
June 1997
Page 4-169