User manual

4300T User Manual Edgewater Networks, Inc.
Version 1.7 45
E. Press Submit.
The reachability settings are used to determine when the EdgeMarc appliance
provides local call switching by entering fallback mode and when it returns call
control to network based call processing servers. The definitions of the reachability
settings are as follows:
Time between heartbeat messages - The number of seconds between each heartbeat
message sent to the call processing servers to determine connectivity.
Time to declare heartbeat lost – The number of seconds that the EdgeMarc appliance
will wait before declaring a response to a heartbeat message lost.
Number of lost messages to declare alarm - the number of consecutively lost
responses to heartbeat messages required for the EdgeMarc appliance to declare a
loss of connectivity to the network based call processing server.
Number of received messages to clear alarm - the number of consecutively received
responses to heartbeat messages required for the EdgeMarc Appliance to declare
successful connectivity to the network based call processing server.
The formula used to determine the maximum time for the EdgeMarc appliance to
declare a loss of connectivity to a call processing server is: maximum time = (X * Y)
+ Z, where,
X = Time between heartbeat messages
Y = Number of lost messages to declare alarm
Z = Time to declare a heartbeat lost
The default value for X, Y and Z in the EdgeMarc appliance is 5. Therefore, the
default maximum time to declare a call processing server unreachable is 30 seconds
or ((5*5) + 5).
Step 3 - Specify the number of digits to use for local dialing
This field is the number of digits that the EdgeMarc appliance will use for dialing
when providing local call switching. By default the EdgeMarc appliance will use 4, 7
and 10 digit dialing. Please follow the steps below if you would like to use a different
number of digits:
A. Log into the EdgeMarc appliance using a Netscape or
Internet Explorer web browser.
B. Select System.
C. Select Survivability.
D. Enter the number of digits for local dialing in the
Local Dial Plan section of the web page.
E. Press Submit.