Lucent Technologies MERLIN LEGEND Release 6.1 Feature Reference page 560

MERLIN LEGEND Communications System Release 6.1
Feature Reference 555-661-110
Features
Primary Rate Interface (PRI) and T1
Test Telephone Number
This option assigns a test line telephone number for each 100D (DS1) module
installed in the control unit that provides ISDN PRI service.
Timers and Counters
This option sets the timer and counter thresholds. The factory settings for
thresholds are standard and rarely need to be changed. (See "At a Glance" on
page 489
from the network before the duration of the timer setting, the communications
system takes appropriate corrective action.
!
CAUTION:
After initial installation, these timers rarely if ever should be changed.
The timers and counters are as follows:
T200 Timer. Times the delay in link layer acknowledgment of a message
sent from the communications system to the network over a D-channel.
T203 Timer. Times the period of time between each exchange of
messages between the system and the network on the D-channel.
N200 Counter. Counts the number of times the communications system
has transmitted a message on a D-channel because no link layer
acknowledgment is received from the network.
N201 Counter. Counts the maximum number of layer 3 octets the system
can send or receive in a single D-channel message.
K Counter. Counts the number of layer 3 unacknowledged messages sent
from the communications 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
communications system sends a disconnect message to clear a call.
T308 Timer. Times the delay in network response when the
communications 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-
proceeding message on an outgoing call.
T313 Timer. Times the delay in network response when the
communications system sends a connect message that indicates the
completion of an incoming call.
T316 Timer. Times the delay in network response when the
communications system sends a restart message to clear a B-channel.
for factory settings and valid ranges.) When no response is received
Issue 1
August 1998
Page 511
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