call delay recently started last week and its getting worst.

[Song]

Hi,

Anyone know how to troubleshoot this issues. The system was working fine just noticing last week that the calls are getting delay. The voice coming in are getting delay around 4-5 sec. That is a huge gap. Nothing changed on the network side or the carrier side. Can someone tell me what is causing this? is this a provider issues again? did they change something? Please show me how to troubleshoot this or what setting do i need to do ? for testing.

thank you

 

[Alphabetic]

First things first, can you provide this info:

https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/

 

[Song]

• 3CX Version, Professional Annual 16.0.641
• Server OS, Debian 9
• hosted onsite
• Yealink T48G
• Provisioning Method: Local
• Trunk Provider or Gateway Make/Model: AT&T IP FLEX
• Has the Firewall Checker passed: NO (complaining about SIP ALG)
• Are custom Phone Templates being used:NO