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Author Topic: Irritating VOIP Issues  (Read 6038 times)

m2k2

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Irritating VOIP Issues
« on: December 27, 2008, 09:09:13 PM »
I have an AC211 device that I'm using with gizmo project. I'm forwarding ports 1025,3478,5004-5019,5060,16384-16403,64064 to the device.

I used to have a Linksys WRT54gs but needed the DIR-825 for the dual bands. Anyway, my issue is that when I put the ac211 device behind the router, as it was with the Linksys, the ac211 can't communicate well.

I have a syslog setup for the ac211 and the dlink, it shows that the ac211 registers yet when the phone rings some packets are dropped. I see the D-Link DIR-825 is dropping outgoing packets even though it is in the DMZ and port forwarding is properly setup.

I've also tried unchecking SIP under Application Level Gateway (ALG) Configuration and unchecked Enable SPI.

When I uncheck SIP my device fails to register. When SIP is checked, the device registers yet fails to communicate.

Can anybody please please help me?
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funchords

  • Level 3 Member
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  • Posts: 296
Re: Irritating VOIP Issues
« Reply #1 on: December 27, 2008, 11:53:28 PM »
Do one or the other -- DMZ or port forwarding -- but not both. 

What packet drop are you getting?

Something to try:

1.  disable QOS Engine Automatic Uplink Speed; and
2.  disable Setup Networking DNS Relay; then
3.  reboot both router and computers

Retry the Gizmo device.
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Lycan

  • Administrator
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  • Posts: 5335
Re: Irritating VOIP Issues
« Reply #2 on: December 29, 2008, 12:10:32 PM »
Also kill the Dynamic Fragmentation, see if that helps.

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m2k2

  • Guest
Re: Irritating VOIP Issues
« Reply #3 on: January 01, 2009, 04:57:10 AM »
Thanks! It's working with the DMZ.

Once I disabled the port forwarding and enabled the DMZ it worked. If I tried using both, it failed to work.

I don't have QOS enabled. I also don't have dns relaying enabled.

For some reason it works with the DMZ but not port forwarding. I was getting packets dropped going out from the gizmo device to the sip proxy. Why would I be getting dropped packets when "enable SPI" is not checked on the firewall page?

Do you have any idea on appropriate ports to forward to allow  the ac211 to work without the dmz?
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