Best settings for wireless router

Question

I'm using my cellphone connected to my home wireless router as a voip phone.  Samsung Galaxy Note 4 cellphone;  Android 5.0.1; Zoiper 1.23 for Android; paid version.

My ATT modem/router allows for "certain services forwarded directly from the internet to a particular device" under the Firewall Advanced settings.  There are voip services listed here (such as AIM Talk, Dialpad, etc) but not Zoiper.  Would it be helpful to set this up for the Zoiper app, if it's even possible?  If it would help, here's what's needed to set up a custom service:

Global Port Range

Base Host Port

Protocol: both, udp or tcp

In general, are there any wireless router settings that can help with voip call quality?  Any suggestions would be much appreciated.

Thanks!  Lisa

Answer 1

Are you able to do prioritization based on the ip address of the voip server ? That would be the easiest.

The port range could also be used, but it is a more complicated as by default a random port will be used on zoiper and on the server.