[Spce-user] Randomly no RTP traffic

VoIP Mail voip at 1469.nl
Fri Mar 18 05:11:02 EDT 2022

Hi Walter,

Thanks for your advise. I just opened the ports 40000-45000 and I think this will solve the problem!

King regards,
From: Walter Klomp <walter at myrepublic.net>
Sent: Friday, March 18, 2022 10:01:07 AM
To: VoIP Mail <voip at 1469.nl>
Cc: spce-user at lists.sipwise.com <spce-user at lists.sipwise.com>
Subject: Re: [Spce-user] Randomly no RTP traffic

Check if your firewall is open for the rtp ports 30000-45000 that’s probably the issue. Matching the range in your config.yml

On Fri, 18 Mar 2022 at 12:01, VoIP Mail <voip at 1469.nl<mailto:voip at 1469.nl>> wrote:


I am running CE Sipwise NGCP platform version 'mr8.5.3', and randomly there is no sound on incoming calls. After I restart the ngcp server the RTP traffic is coming back and is being processed. This problem occur on all of my incoming calls with different peering groups. The call will get connected and the duration timer is ticking, but there is no RTP strem..

How can I troubleshoot this the best and which logfles do I have to check?

Kind regards,


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