Configuring Cas State Machines - AudioCodes Mediant 3000 User Manual

User's Manual
3. Click the channel icon (SDH Link for SONET/SDH, or DS3 Number for DS3), and
then define the transmission settings as required.
4. Click Submit.
5. Reset the device and save your settings to the flash memory (see ''Resetting the
Device'' on page 577).
For SDH/SONET, to view the KLM Numbering Mapping Table page, click Go to the KLM
Mapping Table
(KLM Numbering)'' on page 385.
22.4

Configuring 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.
The CAS table used can be chosen in two ways (using the parameter CasChannelIndex):

Single CAS table per trunk

Different CAS table per group of B-channels in a trunk

To modify the CAS state machine parameters:
1. Open the CAS State Machine page (Configuration tab > VoIP menu > PSTN > CAS
State Machines).
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 (see ''Configuring Trunk Settings'' on page 361),
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, and then reset the device (see ''Resetting the Device'' on page 577).
Version 6.8
button. For a description on KLM numbering, see ''Trunk Numbering
Figure 22-7: CAS State Machine Page
369
22. Digital PSTN
Mediant 3000