Evaluation of Incoming SIP Messages
Proceed as follows:
•Separately for VoIP providers
•Using the Configuration Manager (page Réseaux publics > Voice over IP (VoIP page) > Fournisseur > Configurer)
Note: You can obtain the data for the settings either directly from the VoIP provider or from suitable lists in the Internet.Requirements:
•For entering a URL: configured DNS server
•For using a STUN server: IP operating mode IPv4
Fournisseur
Select the provider to be displayed/configured.
The phone numbers of incoming VoIP calls listed in the call data list usually need to be converted before they can be used for callbacks.
Note: To check these settings, direct incoming exchange line calls via this VoIP provider, e.g. using a mobile phone, and check the phone number sent along with the call in the call data list (in Données des utilisateurs > Liste des appels).Note: To identify the user-defined settings, select an incoming call under Surveillance > Flux de données réseau and view it in the Wireshark programme. Select the options you require in the list fields under Hiérarchisation des recherches (description Wireshark). The names ("terms") used for the search fields match the names used in Wireshark.Note: The phone number to be evaluated should be as canonical as possible (+445306.... or 00445306…). Otherwise it is not used for evaluation.Internationaliser les numéros de téléphone inconnus
If phone numbers that are not in the standard canonical format are received: (e.g. +445306… or 00445306…), they are converted into this format.
Évaluer Connected Party Number (COPN)
Enabling this function prevents that a direct callback fails due to an incorrect depiction of the phone number when the call is answered.
Définir le préfixe du numéro de téléphone
Sets a prefix for the country code before the phone number (maximum 10 characters).
Source pour le numéro appelé
Par défaut
Selects an evaluation method for phone numbers which will work for most providers.
Ligne de requête
Forces the phone number to be evaluated using the Request Line.
En-tête « To »
Forces the phone number to be evaluated using the To Header.
Type d’analyse
Par défaut
Selects an evaluation method for phone numbers which will work for most providers.
Default (using the From Header as a Screened Number)
Selects an evaluation method for phone numbers which will work for most providers. The user provided number (unscreened number, corresponds to CLIP no screening) in the "From" header is transferred to the network provided number (screened number). The phone numbers can be used, for example, for Call Through via VoIP.
Caution: As soon as you have enabled this option, your phone and PBX are open to attacks such as the transfer of manipulated phone numbers.