Solved

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

Posted on 2008-06-24
3
817 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
  • 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

Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

Question has a verified solution.

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

To setup a SonicWALL for policy based routing to be used with the Websense Content Gateway there are several steps that need to be completed. Below is a rough guide for accomplishing this. One thing of note is this guide is intended to assist in the…
In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
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…
Both in life and business – not all partnerships are created equal. Spend 30 short minutes with us to learn:   • Key questions to ask when considering a partnership to accelerate your business into the cloud • Pitfalls and mistakes other partners…

920 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

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now