Solved

Accessing SIP proxy through Cisco 837 doesn't work - registration not possible

Posted on 2008-06-24
3
822 Views
Last Modified: 2013-11-16
Hi,
I've been banging my head for days.  Has someone got SJPhone 1.65 configured through a Cisco 837 ADSL router with the firewall feature set enabled?

I'm using draytel.org, but I've got the same issue with other providers such as Sipgate making it most likely to be a router config issue.  Same SJPhone (SIP client) config works just fine on an "open" connection to the internet, so it's not a client config issue.

An example config to let SIP proxy connections behind a NAT'd Cisco 837 would be gold!

Thanks,

--Garf
0
Comment
Question by:engerd
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 2

Accepted Solution

by:
pierky earned 500 total points
ID: 21857858
Umh... can you post your configuration? Maybe a "show ip nat trans" can be helpful too...
Try to disable the Cisco builtin SIP ALG and see what appens...

no ip nat service sip udp port 5060
0
 

Author Comment

by:engerd
ID: 21860725
As requested - here's a dumbed down config with the relevant bits.  My IOS knowledge is pretty good, it's SDM that's throwing me the wobbly here.  I really don't want to have to hand code these router configs, and it would be nicer to know what SDM does and why.

Disabling Cisco SIP ALG makes no difference.

Thanks.
cisco837.txt
0
 

Author Comment

by:engerd
ID: 21860768
AAAARGH!

It just started working - I didn't give SJPhone time to register properly.

Disabling the Cisco builtin SIP ALG did the trick.

Why do they bother!

Would love to know why it was broken, but full points to pierky in any case!

Thanks.
0

Featured Post

Defend Your Organization from The Greatest Threats

Looking to fill the gaps in your security? Bring together information from the network, endpoint and threat intelligence feeds to really see what's happening in your organization. Join the WatchGuardians in their adventures fighting cyber crime!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Many of the companies I’ve worked with have embraced cloud solutions due to their desire to “get out of the datacenter business.” The ability to achieve better security and availability, and the speed with which they are able to deploy, is far grea…
When speed and performance are vital to revenue, companies must have complete confidence in their cloud environment.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question