PTMP Connection
* Important: The expert settings for the ISDN connection are settings that should only be changed if e. g. country or provider-specific particularities make it absolutely necessary.
Proceed as follows:
Using the Configuration Manager (page Public switched tel. networks > ISDN > PTMP connection > Expert configuration > Configure)
Requirements:
Configured PTMP connection
Country settings for this exchange line
At configuration and relocation of the PBX, the country-specific settings are automatically set.
Country settings have been changed
If you make not country-specific expert settings, you must save them when leaving the page.
Copy settings to  Execute
The settings of this port can be copied an transferred for another port.
Charge information
Requirements:
Charge information provided by the network provider
The PBX stores the charge information sent by the network provider and uses it to evaluate individual calls.
* Important: Disabling this function is only advisable if it causes problems on the external connection (this depends on the network provider/country).
* Important: Some telephony providers do not send charge information. If this type of provider is being used, you cannot apply any charges to a particular call.
* Important: You cannot check exactly how many PBXs should be charged for each call because, for example, you cannot uniquely assign the charges to one of the two subscribers involved in a query call from an external call.
* Important: If you are using the Soft-LCR 4.0 LCR procedure, the duration of the call and your own table of tariffs are used to calculate the charges.