Please make sure you post any solution you find to this issue to the
list I have been frustrated by this as well.
Scott Henderson
============================================================================
Finite Technologies Incorporated
3763 Image Drive, Anchorage, Alaska 99504
Phone: 907.339.8085 ext 6101, Fax: 907.333.4482
http://www.finite-tech.com
http://www.chillywall.com
http://www.virtuale.cc
http://www.mphage.com
Current Local Time: http://www.worldtimeserver.com/time.asp?locationid=US-AK
============================================================================
Tomas Florian wrote:
Hello,
I'm having some major problems getting SIP phones to register whenever I put
them behind a Linksys router. The same phones will register behind any other
NAT (I've tried 3 others without problems)
I've been debugging using Ethereal and these are the differences that I
found between Linksys WRT54G and a Monowall Router as an example (Monowall
router is one of the many that work fine for me):
REGISTER sip:asterisk.mydomain.com
Monowall (good registration)
- Via: SIP/2.0/UDP 192.168.10.199;branch=...
- Authorization: DIGEST ..., uri="sip:asterisk.mydomain.com", ...
- Contact <sip: [EMAIL PROTECTED];user=phone>
Linksys WRT54G (Bad registration - 403 Forbidden)
- Via: SIP/2.0/UDP 66.x.x.166;branch=...
- Authorization: DIGEST ..., uri="sip 66.x.x.166:5060", ...
- Contact *
As you can see the difference seems to be that with the Linksys the SIP
request has it's WAN IP + port (66.x.x.166) whereas the request from behind
a monowall has the LAN IP of the phone
What is the explanation for this difference? Needless to say - I don't have
any special port forwarding enabled on either one of these routers and I'm
using the identical phone with identical configuration for both tests.
I have outgoing proxy in my phone's configuration but it almost looks like
it's disregarding that option when behind the Linksys router.
Another interesting thing to note is that I have tried connecting to some
other proxy from behind Linksys (not my own asterisk but some other provider
- I don't know what they are running) I was able to register without a
problem. Interestingly, the registration request looked identical to the
monowall one (Via: LocalIP , uri: FQDN ) ... unfortunately because I am not
the system admin on that VoIP server I can't login to see what configuration
they have in order to copy it.
I'm really out of ideas ... if anyone has any hints of what else I could
check out I would really appreciate that.
Thank you,
Tomas
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