With Call Back service, PSTN callers can save a call charge when calling to and through QX200. QX200 provides the possibility of creating a list of those trusted PSTN callers that are allowed to make free of charge calls to QX200's Auto Attendant or through its Call Relay menu to the third party IP or PSTN destination. Two types of Call Back services are available on the QX200: Pre-configured Call Back and Remote Call Back Configuration.
Pre-configured Call Back
For Pre-configured Call Back, a list of trusted PSTN callers must be configured in the QX200's Authorized Phones Database using Web Management. The Call Back service should be enabled and a valid callback destination should be specified for each PSTN caller.
To use Pre-configured Call Back, the PSTN caller registered in the Authorized Phones Database simply calls to the PSTN number attached to the QX200 FXO line (the FXO line should be previously routed to the Auto Attendant from the FXO Settings page) from the global PSTN network. Let the call to ring once and then hang up. Call Back will be instantly activated, and QX200 will call back to the defined Call Back destination. By answering the incoming call the PSTN party will be connected to the Auto Attendant menu.
Remote Call Back Configuration
The Remote Call Back Configuration service is used by authorized PSTN caller to configure or reconfigure by an authorized PSTN caller using a phone and calling to the QX200's Auto Attendant. Remote Call Back Configuration is divided into two modes accessible from the QX200's Auto Attendant: Permanent Call Back and Non-Permanent Call Back.
Note: Remote Call Back Configuration services are only available when the Automatically Enter Call Relay Menu checkbox is disabled in Authorized Phones Database for the trusted user.
Permanent Call Back service allows the callers registered in the Authorized Phones Database to create a new trusted PSTN Caller with Call Back enabled. They can also modify the Call Back destination of an existing PSTN Caller in the Authorized Phones Database. By calling QX200's PSTN number (that is previously routed to the Auto Attendant) and entering the Auto Attendant menu, the caller can use the *6 code (see Feature Codes) to create a new trusted PSTN Caller as well as to modify the Call Back destination for the already registered Caller in the Authorized Phones Database.
Entering the Permanent Call Back reconfiguration menu, the system will ask the caller to login by dialing the number and an appropriate password for the QX200's extension that is used as login extension in Call Back settings. After entering the login successfully the PSTN callers should follow the voice instructions for configuring a new entry or reconfiguring the existing entry in Authorized Phone database.
When the system accepts the settings, the corresponding entry will be logged to the Authorized Phones Database. The detected PSTN caller address must correspond to the one applied by the caller, the FXO line must be available on the QX200, there must be network connectivity and the destination must be reachable. The PSTN caller will then be disconnected from the QX200's Auto Attendant and the defined Call Back destination will receive a call from the QX200 within the next 45 seconds. Answering the incoming call, the PSTN caller will be reconnected to the QX200's Auto Attendant.
Non-Permanent Call Back configuration service allows the trusted caller to organize one-time Call Back to the defined PSTN destination. In this situation, no entry will be logged to the Authorized Phones Database.
By calling QX200's PSTN number (that is previously routed to the Auto Attendant) and entering the Auto Attendant menu, the caller is able to use the *5 menu (see Feature Codes) to modify the Call Back destination for the already registered Caller in the Authorized Phones Database.
The system will ask the caller to login by dialing the number and an appropriate password for the QX200's extension that is used as login extension in the Call Back settings. After successful login, the PSTN caller should follow the voice instructions for reconfiguring the existing entry in Authorized Phone database.
The detected PSTN caller address must correspond to the one applied by the caller, the FXO line must be available on the QX200, there must be network connectivity and the destination must be reachable. The PSTN caller will then be disconnected from the QX200's Auto Attendant and the defined Call Back destination will receive a call from the QX200 within the next 45 seconds. Answering the incoming call, the PSTN caller will be reconnected to the QX200's Auto Attendant.