AllVoIP AV-3400 4 sims, how to disable call back on the gateway 2 sims?

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Grigory KOVALENKO2017-07-26 13:14:46

Telephony

Grigory KOVALENKO, 2017-07-26 13:14:46

AllVoIP AV-3400 4 sims, how to disable call back on the gateway 2 sims? Moreover, it is important to do it somehow inside the gateway, and not with the help of sending over ports ... I’m completely lost, I will be grateful for the hint :)

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