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Silent Audio Calls

David Jumbi

Hi I have a Sophos XG-125 (new deployment). I am having silent calls from one extension to another within the organization. SIP works fine as the call can be placed and received but the media isn't going through (RTP not somehow not flowing). I have tried both system system_modules sip load and system system_modules sip unload commands but there was no change. Anyone has a solution to this its really bugging me.



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    Just to give more insight , the firewall is the gateway for my vlans ,where inter-vlan routing is enabled. The phones and the pbx server are on differents vlans so when initiating calls traffic has to cross the firewall. its my understanding that RTP flows between the phones directly but somehow it appears they go through the firewall in my environment.

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    Just to give more insight , the firewall is the gateway for my vlans ,where inter-vlan routing is enabled. The phones and the pbx server are on differents vlans so when initiating calls traffic has to cross the firewall. its my understanding that RTP flows between the phones directly but somehow it appears they go through the firewall in my environment.

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