No voice on incoming calls.

[jst1960]

I have had incoming call issues the last two Saturdays. Last week the issue was that incoming calls were going straight to voicemail. After rebooting the Grandstream HT502 the issue was gone. Today I'm having an issue of incoming calls not having any audio. I did a test call from my mobile phone, my wife picked up and I could not hear anything from her, but she could hear me. I'm sure if I reboot it will resolve the issue for a few days, but I need a fix for this. I don't need my wife jumping me about phone issues every week!
I will be making a support call Monday after work, but if anyone has any ideas about what may be going on, I would appreciate any feedback on this issue.

One other thing, I notice that phone 1 and phone 2 are blinking on the ATA, is this normal?

Here is my setup:

Static IP setup: HT502
Selected Statically Configured As
Assigned IP address of: 192.168.1.151
Subnet Mask: 255.255.255.0
Default Router: 192.168.1.1 (Linksys wrt54gl)
DNS Server 1: 156.154.70.1 (default from VOIPo)
DNS Server 2: 156.154.71.1 (default from VOIPo)

Ports 5004-65000 (UDP) were forwarded to 192.168.1.151 in Linksys WRT54GL router

Thanks,
Steve