Version 6.4 231 March 2012
SIP User's Manual 18. GW and IP to IP
18 GW and IP to IP
This section describes configuration for the GW/IP2IP applications.
Note: The "GW" and "IP2IP" applications refer to the Gateway and IP-to-IP
applications respectively.
18.1 Digital PSTN
This section describes configuration of the public switched telephone network (PSTN)
parameters.
18.1.1 Configuring TDM Bus Settings
The TDM Bus Settings page allows you to configure the device's Time-Division
Multiplexing (TDM) bus settings. For a description of these parameters, see 'Configuration
Parameters Reference' on page 541.
To configure the TDM Bus settings:
1. Open the TDM Bus Settings page (Configuration tab > VoIP menu > TDM submenu
> TDM Bus Settings).
2. Configure the parameters as required.
3. Click Submit to apply your changes.
4. Save the changes to flash memory (see 'Saving Configuration' on page 482).
18.1.2 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
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