The IP phones when connected to Home(Remote users) there is no audio.
We have a VoIP setup across our offices with a switchvox/digum box and Polycom IP phones.
The internal office communication and from office communication to the outside world is excellent.
We decided to give out the IP phones to remote/home users to plug into internet and could use it as inter office communication.
The problem here is when we connec the IP phones at home each pointing to the Server/Digum box external IP the communication doesnot happen:
- Each phone is programmed manually with extention
-When the Home phone dials an office extension the Phone rings in office as receiveing a call but there is no audio at all.
Some config explainations:
The server/digum has a external IP configured on firewall to nat to the internal ip 192.168.1.20 (our internal subnet)
The Home/Remote IP phones are pointing to the server Public ip when connecting.
The firewall has the below ports open for Voip and required policy applied:
UDP: 5060,2234-2237, 4569, 10000-20000
TCP: 5060,2000, 80, 443
Please advise if you need any more explaination and output.
welcome to the Polycom Community.
According to the Admin Guide:
The starting port for RTP packets. Ports will be allocated from a pool starting with this port up to a value of (startport + 47) for a voice-only phone or (start-port + 95) for a video phone.
So your Port 2234-2237 would not cover this.
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