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P2000W V2 Troubleshooting Guide
2.
How can I check if problem is cause by NAT or not?
ion. One of the best way to see if
the problem is cause by NAT or not is to put P2000W V2 on public network, (With
d NAT than very likely your
NAT gateway is not supporting SIP pass-through. In such condition you will need to
There may not be an easy or quick answer to this quest
public IP and no NAT) see if it work under such condition.
If you it can work on public network but can not work behin
consult your NAT router vendor for resolution.
3.
If I've confirmed it is an NAT problem. What should I do?
you need to check the
following.
your NAT router vendor supports SIP pass-through.
eed to consult your ITSP
support if they support SIP outbound proxy. Since different NAT router vendor implement
IP friendly. ITSP may support STUN instead of
SIP outbound proxy to resolve this issue. To use STUN sip client must support STUN
If you are certain or confirmed the problem is caused by NAT
1. Check if
2. If the NAT router does not support SIP pass-through, you n
NAT differently. Typically ITSP may provide SIP outbound proxy to resolve NAT pass-
through issues as sip proxy does not require the SIP client to do any modification as the
server will modify the SIP message content according to the your WAN IP it sees. If your
ITSP supports outbound proxy you need to obtain the configuration and configured the
outbound proxy location on P2000W V2.
3. As mentioned some NAT may not be S
client. How STUN work is when the user register the server will tell SIP client what the
WAN IP the server sees from the SIP client and SIP client will use this IP as SIP content
to identify its location.
4.
Unable to register with the SIP server?
er.
the SIP register server is reachable. If your
register server uses domain name make sure DNS name can be resolved.
3. re it follow
blem.
If you are unable to register with SIP serv
1. Make sure the Internet is reachable and
2. Make sure the SIP account is correct and the password is correct.
Check if there is NAT router before it. If there are NAT router befo
troubleshooting step above to verify if NAT is the cause of the pro
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