[asterisk-users] NAT issue (i think?)

[Ron]

hi daniel

thank you for your reply, i have enabled NAT keep-alive and NAT-Mapping 
on the Linksys devices.

i have enabled qualify before but it seems it's worst as the linksys 
devices keeps on rebooting and there was one issue that when i set 
qualify to all users my server bogged down and asterisk crashed.

where do i enable the UDP session timeout? on the linksys devices or the 
asterisk?

TIA

Regards
Ron

On 9/28/10 6:14 PM, Daniel Tryba wrote:
> On Tue, Sep 28, 2010 at 09:28:24AM +0800, Ron wrote:
>> got this problem that IP phones could not re-register to my server. even
>> if device is power cycled it still would not register. the solution i
>> found was to change the SIP port settings on the phone and it will
>> register. but after registration expires and its time to re-register the
>> same thing will happen, so i have to update the port settings again just
>> to make it work which is troublesome.
>
> Sounds like NAT problems, do you have qualify enabled for these devices?
> Also the Linksys devices have a keep alive option (NAT Keep Alive
> Enable).
>
> But even with both these setting enabled NAT gateways sometimes seem to
> lose track of SIP sessions (I have more trouble with Cisco devices than
> Linux routers), setting the UDP session timeout to 10m seems to help
> (default is something like 3m).
>