My set-up:
Comcast Cisco DPC3941B Business Gateway
cisco rv220w router
The cisco rv220w is in DMZ on Comcast Gateway
the SBC is in DMZ on Rv220w
No SIP ALG enabled on either as far as I can tell.
30 extensions
Fanvil x3 x4 x5
yealink 21p_e2
Windows Softphones
I have a 3cx SBC on premise. It is a
intel core i3 550 3.2 ghz dual core
4gb ram
debian 9
The server is a google compute engine
g1-small 1 vcpu 1.7gb ram intel ivy bridge
My problem: Audio drops out so that the caller cannot here the callee inbound and outbound.
internal and external calls
errors I see in the log
I have attached a wireshark as well
The wireshark does not show any RTP streams
all firewall tests clear
no sip alg
Most calls internal and external drop audio between 5 and 10 minutes. However some calls can go for hours without dropping inconsistently. Across all devices
Comcast Cisco DPC3941B Business Gateway
cisco rv220w router
The cisco rv220w is in DMZ on Comcast Gateway
the SBC is in DMZ on Rv220w
No SIP ALG enabled on either as far as I can tell.
30 extensions
Fanvil x3 x4 x5
yealink 21p_e2
Windows Softphones
I have a 3cx SBC on premise. It is a
intel core i3 550 3.2 ghz dual core
4gb ram
debian 9
The server is a google compute engine
g1-small 1 vcpu 1.7gb ram intel ivy bridge
My problem: Audio drops out so that the caller cannot here the callee inbound and outbound.
internal and external calls
errors I see in the log
Code:
[CM505001]: Endpoint Extn:307: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone for Windows 15.5.12227.5] PBX contact: [sip:[email protected]:5060]
10:52:32.225|7f298cd1d700|Error|/home/repomaster/workspace/15.5SP6/SPBuild/Sources/Projects/Tunnel/SipCore/SipCore.cpp(708): OK w/out SDP: SipResp: 20
11:02:01.250|7f45934a7700| Warn|/home/repomaster/workspace/15.5SP6/SPBuild/Sources/Projects/MediaServer/src/RTPReceiver.cpp(440): 5:MediaProxy:VRTP receiver for [email protected]:5482(C:49.2) has no assigned socket
11:02:01.250|7f45934a7700| Warn|/home/repomaster/workspace/15.5SP6/SPBuild/Sources/Projects/MediaServer/src/RTPReceiver.cpp(440): 5:MediaProxy:VRTCP receiver for [email protected]:5482(C:49.2) has no assigned socket
11:02:01.250|7f45934a7700| Warn|/home/repomaster/workspace/15.5SP6/SPBuild/Sources/Projects/MediaServer/src/RTPReceiver.cpp(440): 5:MediaProxy:T38 receiver for [email protected]:5482(C:49.2) has no assigned socket
11:02:01.250|7f45934a7700| Warn|/home/repomaster/workspace/15.5SP6/SPBuild/Sources/Projects/MediaServer/src/RTPReceiver.cpp(440): 5:MediaProxy:T38_ receiver for [email protected]:5482(C:49.2) has no assigned socketI have attached a wireshark as well
The wireshark does not show any RTP streams
all firewall tests clear
no sip alg
Most calls internal and external drop audio between 5 and 10 minutes. However some calls can go for hours without dropping inconsistently. Across all devices
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