Lines are cutting

[Ely1]

Hello
Appreciate if you can help us. Most of our calls are being disconnected after 4 to 5seconds. This is happening approximately every day.
Any idea what could be the issue.
thanks.

 

[VasilisV_3CX]

Hi @Ely1,

Can you provide more information as per this post? https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/

 

[Ely1]

Hello @VasilisV_3CX
Please find my comments below:

• 3CX Version Enterprise Annual 16.0.8.9
• Server OS, Debian 9
• Is the 3CX Server Hosted and where? Azure
• IP Phone Make/Model/Firmware version, No IP phones only Windows 3cx app
• Provisioning Method:SBC
• Trunk Provider or VoIP Gateway Make/Model, Grandstream GXW4104
• Has the Firewall Checker passed: Yes
• Are custom Phone Templates being used: No

Thank you.

 

[VasilisV_3CX]

Hi @Ely1,

Does this happen with internal calls? External Calls?

Could you clarify a couple things, are you using a FXO gateway with a cloud installation as this isn't supported?

Also the SBC, if you're only using the 3CX Windows App, why use the SBC?

 

[Ely1]

Hello @VasilisV_3CX
it happens with the internal & external calls
SBC because they have physical phones in addition to the 3cx apps

 

[VasilisV_3CX]

Hi @Ely1,

Firstly I must remind you that the Grandstream GXW4104 is not a supported model when you're not local to the PBX.

If you call from 3CX App to *777, does the call drop after 5 seconds?

If no, call from Ext A to Ext B, does that drop after 5 seconds as well?

If both scenarios drop the call after 5 seconds, can you create 2 fresh extensions on the PBX and send me the log in details via PM?