[Spce-user] failed outbound calls on pickup

[Dustin Rollins]

I have seen things like this with UDP.  The specific issue that I have seen is that the SPCE has so many headers you will exceed the 1500 byte MTU and the fragment of the packet will get dropped.  Changing to TCP allows the entire message to go through.  I have not seen changing to TCP add any significant time to call setup.



From: Spce-user <spce-user-bounces at lists.sipwise.com> On Behalf Of Brian Pelletier
Sent: Wednesday, September 18, 2019 5:59 AM
To: spce-user at lists.sipwise.com
Subject: [Spce-user] failed outbound calls on pickup

Re-sending, I was no longer on the distribution list so I'm not sure if anyone I had replied to this yet.

I am getting intermittent dropped calls as they are answered on outbound calls only.  on a packet capture I can see that i am reviving a 200 OK from the carrier but SPEC is not responding back resulting in a timeout and BYE from the carrier.  If i change the transport to TCP from UDP all calls work fine but the call setup takes about 10 seconds so this is not a viable option for me.  I am running 5.5.7, has anyone else run into this problem or have an idea of what might need to be done to fix this?








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