The phone is sending to the central server the public IP of its location and not its internal, assigned to it, IP address. How can I force the Polycom to send its IP address?
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It is a Polycom IP phone model 601. The software is SIPx based by Pingtel, similar to Asterisk. For some reason the Siparator by Ingate is receiving the public IP address of the remote location and not the actual internal IP address of the phone.
Behind the public IP of the location there are 2 computers and the Polycom. Since the Ingate SIparator is not gettting the phones actual IP address it cant find it when a call travels toward the phone.
The phone will not be able to send it's internal ip address (private ip) if you are using NAT. The only way it can send the internal IP of the phone is if you create a VPN tunnel to the central site. Then the internal ip will travel to the voice server.
Try this:
1. Make sure your phone has the public IP address of the central sites SIPx server in its SIP Gateway setting.
2. On your router, enable NAT Traversal, this will allow the data to connect to your site and flow back correctly.
Let me know if enabling this works. Also, you will be seeing your home public ip show up in SIPx as this is how it must traverse the internet, your internal private ip address can not route across the internet, it is a reserved block of ip's that are automatically dropped.
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by: heim0698Posted on 2009-10-20 at 10:43:15ID: 25616574
I don't understand your question. I am assuming you have a phone at home, want it to connect to the voice server at your central location.
What phone system are you running?
If this is Asterisk based, make sure your phone server allows for NAT, also make sure you have posted your IP or Hostname of the external address inside your SIP_NAT config file. I think that is what it is called. That is usually the problem most people face.