I installed an asterisk 18.104.22.168 with a Digium B410p connected to 2 BRI channels. I use SIP protocol for internal phone.
I created a small IVR and if I call the IVR from internal to internal all works fine and the sound quality is verry good, instead, if I call from PSTN netword (through Digium Board) the sound quality is very low.
I tried with different audio format (gsm, alaw, ulaw, wav, etc.) but the result is always the same.
Could you help me to solve this issue?
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