UDP Timeout vs UDP Timeout Stream

Question

Hi, 
 We're getting one-side of calls randomly going silent. 
 The default values of my XG2300 are 
 UDP Timeout 30 
 UDP Timeout Stream 150 
 I read I should increase the timeout to 150, but should I make them match? increase both 5x? 
 I don't understand the difference between two or what new problems I could encounter by messing with them. 
 Thanks, 
 Jeff

Vivek Jagad · Answer

Hello JeffCooper , Thank you for reaching out to the community, Set the timeout value in seconds for UDP connections that have not yet been established. Available values are 30-3600 . No problem at all in changing the values !!

JeffCooper · Answer

I found a series of steps to (I think) take care of this. I've received no reports of dropped calls in well over a week! 
 Log in to the console. 
 Double the udp timeout (I don't know the difference between these but I doubled them both) > set advanced-firewall udp-timeout 60 > set advanced-firewall udp-timeout-stream 300 
 You can view the current settings with > show advanced-firewall 
 It wasn't enough to not enable SIP, I had to unload the SIP and h323 modules. > system system_module sip unload > system system_module h323 unload 
 You can verify they're unloaded with > system system_module show 
 I also disabled a couple other things (I found here: https://www.only-forward.net/2021/03/sophos-xg-siph323-voip-call-issues.html ) I am not using an onsite PBX, I'm running a Mitel cloud solution, but I was desperate. > set ips sip_preproc disable > set vpn conn-remove-tunnel-up disable 
 I'm not positive what these are all about. NOTE: my ipsec remote access vpn DID continue working after I made the above change. 
 I am not positive which of these things were instrumental in making it work, I just know that just changing the timeouts wasn't enough, but all of the above DID work for me (average mileage may vary). 
 Thanks, 
 Jeff