Having call quality issue with SIP. any recommendations on firewall to check


#1

Balance One. Firewall ports configure. SIP ALG ON, two WAN ports active. Plenty of bandwidth, but still phone quality and call reset issues.


#2

I would suggest to enable to following settings:

  • Check the service port running for your SIP phone if it’s not running using default service port.
  1. Enable QOS —> Application for the SIP services - Set priority to high

  2. Configure SIP service for WAN fail-over instead of Load-balancing:
    Outbound policy for SIP Phone/Service

P/S: Make sure new created SIP outbound policy is put on top of all the existing outbound policy.

Please monitor the SIP service quality after added the above settings


#3

Thank You

Made the changes below, will let your know how it goes.