AudioCodes Mediant 2000, User Manual

Page: 97 / 418

Version 5.6 97 November 2008
SIP User's Manual 3. Web-Based Management
3.4.3.2 Configuring the CAS State Machines
The 'CAS State Machine' page allows you to modify various timers and other basic
parameters to define the initialization of the CAS state machine without changing the state
machine itself (no compilation is required). The change doesn't affect the state machine
itself, but rather the configuration.
¾
To modify the CAS state machine parameters, take these 6 steps:
1.
Open the ‘CAS State Machine' page (
Configuration
tab >
PSTN Settings
menu >
CAS State Machines
page item).
Figure 3-49: CAS State Machine Page
2.
Ensure that the trunk is inactive. The trunk number displayed in the 'Related Trunks'
field must be green. If it is red (indicating that the trunk is active), click the trunk
number to open the 'Trunk Settings' page (refer to ''Configuring the Trunk Settings'' on
page
82 ), select the required Trunk number icon, and then click
Stop Trunk
.
3.
In the 'CAS State Machine' page, modify the required parameters according to the
table below.
4.
Once you have completed the configuration, activate the trunk if required in the 'Trunk
Settings' page, by clicking the trunk number in the 'Related Trunks' field, and in the
'Trunk Settings' page, select the required Trunk number icon, and then click
Apply
Trunk Settings
.
5.
Click
Submit
.
6.
Reset the device (refer to ''Resetting the Device'' on page 228 ).
Notes:
•
It's strongly recommended that you don't modify the default values unless
you fully understand the implications of the changes and know the default
values. Every change affects the configuration of the state machine
parameters and the call process related to the trunk you are using with
this state machine.
•
You can modify CAS state machine parameters only if the following
conditions are met:
1) Trunks are inactive (stopped), i.e., the 'Related Trunks' field displays
the trunk number in green.
2) State machine is not in use or is in reset, or when it is not related to
any trunk. If it is related to a trunk, you must delete the trunk or de-
activate (
Stop
) the trunk.
•
Field values displaying '-1' indicate CAS default values. In other words,
CAS state machine values are used.
•
The modification of the CAS state machine occurs at the CAS application
initialization only for non-default values (-1).
•
For a detailed description of the CAS Protocol table, refer to the
Product
Reference Manual
.