XGS-3300 VOIP Issues

Question

We have a new Sophos XGS-3300- Voip Doesn't work well on it. Garbage calls, no ringer, etc. I had them on a UTM and they worked great. I have set DNS Timeout, etc, but no avail. My assistant was on Sophos for hours the other day, but they could not get to work. Any idea?

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Juan Michel · Answer

Cause 
 If there are no errors in the SIP configuration, VoIP issues are usually due to the UDP time-out value. 
 Sophos Firewall has a default UDP time-out of 60 seconds which is usually low for reliable VoIP communication. Usually, your VoIP provider recommends a UDP time-out value, typically 150 seconds. 
 To change the current UDP time-out value from the command line interface (CLI), choose option 4. Device Console and do as follows: 
 Remedy

Type: show advanced-firewall 
 The output shows the current UDP time-out value next to UDP timeout stream .

Type: set advanced-firewall udp-timeout-stream 150 
 This command increases the UDP time-out to 150 seconds. If your provider recommends a different value, use that.

UDP time-out value causes VoIP calls to drop or have poor quality - Sophos Firewall

XGS-3300 VOIP Issues

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