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green · 05-14-2008, 06:07 PM

I don't fully agree with emoci, but his post refreshed my mind

Try to use different local ports as I suggested earlier or different remote (server) ports. Check this thread http://forum.voxalot.com/voxalot-sup...oxy-ports.html

The idea behind this is to force your NAT device (router) to create completely different mappings for your ATAs.

This is how it looks within the router:

Code:

udp      17 170 src=my-local-ip dst=85.17.19.194 sport=5060 dport=5060 src=85.17.19.194 dst=my-external-ip sport=5060 dport=5060 [ASSURED] use=1 mark=257

Here 85.17.19.194 is the address of eu.voxalot.com, both client & server are using ports 5060/UDP (sport & dport).

STUN should not improve the situation but personally I'm always suggesting to have it enabled.
Port forwarding may help, as soon as Siemens does not support sending keepalives. Alternatively register expiration interval may be lowered to achieve the similar keepalive effect.

05-14-2008, 06:07 PM	#4
green Senior Member Join Date: Jul 2007 Posts: 143 Thanks: 13 Thanked 20 Times in 19 Posts	I don't fully agree with emoci, but his post refreshed my mind Try to use different local ports as I suggested earlier or different remote (server) ports. Check this thread http://forum.voxalot.com/voxalot-sup...oxy-ports.html The idea behind this is to force your NAT device (router) to create completely different mappings for your ATAs. This is how it looks within the router: Code: udp 17 170 src=my-local-ip dst=85.17.19.194 sport=5060 dport=5060 src=85.17.19.194 dst=my-external-ip sport=5060 dport=5060 [ASSURED] use=1 mark=257 Here 85.17.19.194 is the address of eu.voxalot.com, both client & server are using ports 5060/UDP (sport & dport). STUN should not improve the situation but personally I'm always suggesting to have it enabled. Port forwarding may help, as soon as Siemens does not support sending keepalives. Alternatively register expiration interval may be lowered to achieve the similar keepalive effect. Last edited by green; 05-14-2008 at 06:15 PM.