![Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) - Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -](https://forums5.grandstream.com/uploads/default/original/2X/8/86c5aa50649f307192c04e4a26f4eda63ec9ece1.jpeg)
Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -
![Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) - Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -](https://forums5.grandstream.com/uploads/default/original/2X/8/8584318998198e88be7060b1c2130241cd492ada.png)
Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -
![Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) - Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -](https://forums5.grandstream.com/uploads/default/original/2X/2/2b429782230fe05531efae954b8a868006563be8.png)
Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -
![Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) - Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -](https://forums5.grandstream.com/uploads/default/original/2X/e/e0e60238ea499ba3d5f6c30e01afff8539162954.png)
Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -
![Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) - Call progress tones - IVR not recognising GXW4104 PSTN line being hung up - FXO Gateways and ATA's (GXW 4100, and HT 503) -](https://forums5.grandstream.com/uploads/default/original/2X/1/173c614e514bc13f1559a322c1aa8eeb36ee33a7.png)