Hi, I have an SL1000 and another PBX. I connected one extension from SL1000 to the other PBX (Yeastar S20) in an FXO port. I can call from S20 to SL1000. When I call from SL1000 to S20 IVR answers but I can't type the desired extension (DTMF signal is not transmitted).
Please help, or if you...
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