Hello everyone I’m here looking for some enlightment, as this is driving me nuts Here’s the scenario: Location A - Sophos utm v9.506 – LAN 1.1.2.0/24 Location B - Sophos utm v9.501 – LAN 1.1.3.0/24 Location C - RED15 connected to location B – Standard/Split - LAN 1.1.4.0/26 Each location has its own PBX, localy hosted lines (E1/SIP) I have an IPSEC VPN Tunnel to connect A and B, automatic firewall enabled RED15 on B have the network A on Splitnetworks, IPSEC on A and B share the RED15 LAN, remote and local network where needed I can reach B and C from A, ping, remote desktop working, transfer files, etc From A, I can register an IP phone extension on the PBX located at B, voice working 2 ways From A, I can register the VOIP phone on the PBX located at C, here's the weird stuff, we can start a call and everything works, voice 2 ways, the problem is when we try a 2nd call, there's no voice What should I look for, what I am missing?, do you need any screens? what info may I supply you to get some help I have looked at Firewall and IPS logs on A and B and nothing gets blocked, at least its not showing I have set rules for Appfilter to allow the VOIP protocols to work on A and B Firewall on A and B is set to allow any outbound and allows communications between A,B, C, LAN segments Thanks in advanced

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No Voice on Remote PBX

larellanos over 7 years ago

Hello everyone

I’m here looking for some enlightment, as this is driving me nuts

Here’s the scenario:

Location A - Sophos utm v9.506 – LAN 1.1.2.0/24
Location B - Sophos utm v9.501 – LAN 1.1.3.0/24
Location C - RED15 connected to location B – Standard/Split - LAN 1.1.4.0/26
Each location has its own PBX, localy hosted lines (E1/SIP)
I have an IPSEC VPN Tunnel to connect A and B, automatic firewall enabled
RED15 on B have the network A on Splitnetworks,
IPSEC on A and B share the RED15 LAN, remote and local network where needed
I can reach B and C from A, ping, remote desktop working, transfer files, etc
From A, I can register an IP phone extension on the PBX located at B, voice working 2 ways
From A, I can register the VOIP phone on the PBX located at C, here's the weird stuff, we can start a call and everything works, voice 2 ways, the problem is when we try a 2nd call, there's no voice

What should I look for, what I am missing?, do you need any screens? what info may I supply you to get some help

I have looked at Firewall and IPS logs on A and B and nothing gets blocked, at least its not showing
I have set rules for Appfilter to allow the VOIP protocols to work on A and B
Firewall on A and B is set to allow any outbound and allows communications between A,B, C, LAN segments

Thanks in advanced

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