Why the FXO interface cannot identify onhook signals of the remote PSTN user

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Currently, the AR with the voice package cannot identify onhook signals of other countries. By default, the AR can identify only onhook signals of China.

The voice file needs to be customized at each site. Contact the service provider.

Other related questions:
FXO interface cannot identify on-hook of the remote PSTN user
The AR with the voice package cannot identify on-hook signals of other countries. By default, the AR with the voice package can only identify on-hook signals of China. The voice file needs to be customized at each site. Contact the service provider.

Why the AR cannot identify the 3G data card
This is because the 3G data card is not supported by the AR. You need to replace the 3G data card with a 3G data card supported by the AR.

What are user identifiers
User identifiers include device IDs and user IDs. A device ID is the ID of a device used by users. The devices can be a plain old telephone service (POTS) phone or a user agent device, such as IP phones and software. A user ID is a unique number assigned to a user. A user ID is the owner of a device ID, and indicates a user's identity. A user ID and a Session Initiation Protocol (SIP) server domain constitute a URL. A device ID can belong to multiple user IDs. Each user has a fixed user identifier, which is bound to a unique device ID. Usually, a user identifier is the global number or long code for the user. Users can dial long codes to call each other, which is the common dial-up mode. Internal numbers or private numbers are provided to users inside the same group, such as an enterprise, company, group organization, school, or hotel. Users in the same group can dial each other's short numbers or private numbers.

How to match FXS users with FXO users on the U1900?
To match FXS users with FXO users on the U1900, do as follows: When configuring the AT0 trunk, configure a default called number corresponding to the slot number and port number of the FXO port. This default called number can be bound to the FXO user. As a result, when a call comes in through the FXO port, the phone of the FXS user rings.

Why cannot local users be deleted
The online local users cannot be deleted using the undo local-user command. Before deleting a user, run the display access-user command in any view to check whether the user is online. If a user that you wants to delete is online, run the cut access-user command in the AAA view to disconnect the user first.

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