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Forum Discussion
How to block ghost calls
The VoIP device has been receiving ghost calls from a fixed IP (seems to be self-generated from the router). There is a suggestion to forward the Port 5060 to an internal IP address outside the DHCP...
Perhaps you could provide a more detailed description of the problem?
There are dozens of VoIP systems. Which is this one?
Can you clarify "from a fixed IP"? Does this mean "from the same IP every time"?
I am not clear on the meaning of "seems to be self-generated from the router".
The VoIP device is Polycom RealPresence Group 500.
The ghost calls (only receiving ringing tones but no callers at the other end) have been generated from a fixed IP address with the following displays, like :
2850@192.168.1.39;
2851@192.168.1.39;
641@192.168.1.39;
1781@192.168.1.39;
1001@192.168.1.39;
1000@192.168.1.39;
100@192.168.1.39;
ml@192.168.1.39;
suk@192.168.1.39; etc.
The IP address is the Polycom device internal IP.
I would contact the phone Mfr to see if they have any information on this. They may have features to help on this.
DL19545698 wrote:The VoIP device is Polycom RealPresence Group 500.
The ghost calls (only receiving ringing tones but no callers at the other end) have been generated from a fixed IP address with the following displays, like :
2850@192.168.1.39;
2851@192.168.1.39;
641@192.168.1.39;
1781@192.168.1.39;
1001@192.168.1.39;
1000@192.168.1.39;
100@192.168.1.39;
ml@192.168.1.39;
suk@192.168.1.39; etc.
The IP address is the Polycom device internal IP.
Polycom support said the H.323 protocol has no function in stopping ghost calls. They recommend a blocking at the router end. That's a suggestion of forwarding the port and open the WAN and I just wonder would such suggestion would work and would like to know if anyone has tried this before.
FURRYe38 wrote:I would contact the phone Mfr to see if they have any information on this. They may have features to help on this.
DL19545698 wrote:The VoIP device is Polycom RealPresence Group 500.
The ghost calls (only receiving ringing tones but no callers at the other end) have been generated from a fixed IP address with the following displays, like :
2850@192.168.1.39;
2851@192.168.1.39;
641@192.168.1.39;
1781@192.168.1.39;
1001@192.168.1.39;
1000@192.168.1.39;
100@192.168.1.39;
ml@192.168.1.39;
suk@192.168.1.39; etc.
The IP address is the Polycom device internal IP.
