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ewsga
Intermediate
Joined: December 01 2009
Location: United States
Posts: 2
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| Posted: December 01 2009 at 1:10pm | IP Logged
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Could you give me a brief overview of
how to use with an existing Asterisk installation? My setup would be a
private NATed network.
Router: 10.0.0.1
Centrex & Media Server: 10.0.0.10
Asterisk: 10.0.0.5
Endpoints are both on the local LAN and on external NATed LANs. I would want the local endpoints to register like they do now directly to asterisk and the external endpoints to connect via port forwards to the Lanscape software and register also with Asterisk.
Basically, if it is possible and makes sense to do so, I want to leave my existing configuration intact but use the Centrex and Media Server modules for solving SIP NAT Traversal issues.
I have the port forwards set up and I can make remote endpoints register with Centrex. What i don't understand how to do from the documentation and support forums is setting up the proxying of information from Centrex to Asterisk. Do I add username/passwords into the Centrex Register and if not how do I configure Centrex to pass registrations to Asterisk?
I've read in the forums talk about white papers and example configurations. It seems this case would be quite the ordinary situation. Is there already
a document that outlines this type of setup?
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support
Administrator
Joined: January 26 2005
Location: United States
Posts: 1666
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| Posted: December 02 2009 at 12:29pm | IP Logged
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Hello Micah,
Yes you can use our centrex and media proxies to do exactly what you want but you will have to add the extra functionality using the plug-in DLL capability of the LS Centrex SIP proxy.
For example, the SIP REGISTER requests will have to be reflected by the centrex SIP proxy using a plug-in to your Asterisk box for phones that are outside of your private network.
We do have other customer installs that use our centrex and media proxies as the VOIP “front end” to the customer’s legacy IP based PBX systems. Their installs function similar to what you describe. Its a simple matter of proper SIP message handling and possible SIP message mods by the centrex plug-in.
Other Asterisk users have asked us for similar capability that you are requesting. Maybe its time we put together a complete canned solution that comes with a ready made plug-in DLL for this specific scenario.
Either you can code your own C/C++ plug-in DLL from the sample that comes with the centrex SIP proxy (with our assistance) or we could do it.
Before we get any further, is this deployment you speak of a single deployment or are you planning on deploying many such VOIP configurations?
Thank you,
Randal
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ewsga
Intermediate
Joined: December 01 2009
Location: United States
Posts: 2
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| Posted: December 02 2009 at 3:23pm | IP Logged
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Randal,
It is just this single asterisk installation. We are installing the Cyberdata Intercoms (similar to their speakers that I've seen you have tested in an earlier post) at our customer locations and we are experiencing NAT translation problems (one way audio, no audio, etc.).
Micah
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support
Administrator
Joined: January 26 2005
Location: United States
Posts: 1666
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| Posted: December 22 2009 at 11:15am | IP Logged
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Hello Micah,
Some additional thoughts:
I looked through our historical product/customer requests logs because I know we have received an adequate number of requests to do exactly what you want to accomplish. There is an opportunity here…
Instead of using my LS proxy products to do what you want, our VOIP Media Engine product could be used. We would have to develop a quick “proxy like” or B2B VOIP app using the media engine, but it would do everything we need. The SIP/RTP inter-op between the media engine and Asterisk is already a proven “win” for us so all the difficult work is done from the VOIP standpoint.
The app could be a simple Win32 console app or a windows service. It also would be good to have an embedded web server configuration capability for the new app.
I wonder if our two companies should collaborate on this effort… Hmmm… interesting.
I am interested in co-development (shared development) between our companies and to offer the end result as a viable product via LanScape web site. I look forward to your response. Thanks for reading…
Have a very Happy Holiday,
Randal
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LanScape Support Forum -> SIP Proxy and Media Proxy - Pre-Sales Technical Support
Topic: Standard Nat Configuration
