We have an existing SIP/h323/CUBE router (ISR4321) that has been working fine for a years. We recently replaced the upstream lan routers and implemented vrrp.
With vrrp enabled we have one way audio for any calls coming through the router. Internal phone calls work fine. As soon as I turn off vrrp the audio works fine.
-->Router1
PSTN(SIP Trunk)-->ISR4321-->SWITCH--> VRRP -->Other LAN Subnets/Phones/etc...
-->Router2
Any suggestions? I am not a voice expert but trying to figure this out as much as I can.
Thanks!
