We have a G3SI. Our software is version R11. What is the best way to block the users from dialing *69 (return call) and incurring charges on our phone bill. Thanks.
The only way they can use *69 is if they have direct access to trunks. If you are using ARS it is easy to block what ever is required. Direct access to trunks can lead real easly to toll fraud.
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