Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

3COM NBX v3000:  No audio from remote phone to LAN but remote2remote works

Posted on 2006-04-26
5
Medium Priority
?
852 Views
Last Modified: 2010-04-12
I have setup remote phones to work with 3COM NBX v3000.  The remote phones are able to see the network, extensions, etc.

1.  From the remote phone, I can call any extension and any extension can call the remote phone.
2.  From the remote phone, audio from the other end can be heard. Whether it is other phones in the NBX network, or home phones and celllular phones, audio can be heard.
3.  PROBLEM:  No Audio (from the remote phone) can be heard on any phone OTHER THAN other remote phones.  Remote to Remote phone works perfectly.


NBX is running Software Version:  R5_0_10    


Any idea how to fix this?
0
Comment
Question by:top_rung
  • 2
4 Comments
 
LVL 2

Expert Comment

by:amaderog
ID: 16548697
How do you have the remote phones conecting to the NBX? Do you have VPNs ?

Do you have "IP on the Fly" enabled in the NBX? Do you have a range of IP addresses set up in the NBX?
0
 
LVL 14

Author Comment

by:top_rung
ID: 16548753
No VPN2VPN
IP on the fly is enabled
The NBX has a public IP then NATd to the internal LAN.
The phones are behind a consumer grade broadband router using cable modem connections.

The current release states that the remote phones support communication from behind a NATd device for use with cable modems, home connections. However, I just spoke to 3COM and they stated that they support it, but not NATd to NATd.  Deceptive if you ask me.

They said the solution was to put the NBX on the public (not recommended) or use VPN routers at the remote connections.  They are almost there it sounds like, but not 100%.

I am going to try the phone directly to the cable modem and see if it works.  If it works, do you know what the security implications are in having a phone open like that?

Thanks,



0
 
LVL 2

Expert Comment

by:amaderog
ID: 16548810
Remote phones support communication behind a NATd but only if the NBX has public IP and the range in IP on the fly is also public IP.
It is confusing, and it hasn't been supported for very long. It helps in some situations, for example when having the phone behind internet sharing with a PC that established a VPN.

Having a remote phone with a public IP should work since the phones inside your local LAN will know how to get to your remote phone.    I haven't tested it that way.
0
 

Accepted Solution

by:
GranMod earned 0 total points
ID: 16575644
Closed, 500 points refunded.
GranMod
The Experts Exchange
Community Support Moderator of all Ages
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

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

Every year the snow affects people and businesses. According to the Federation of Small Businesses (FSB), in 2009, UK businesses lost an estimated £1.2bn (http://news.bbc.co.uk/1/hi/business/7864804.stm) because of bad weather. This article was c…
Article by: user_n
How Sip Phone (User Agent) works and communicates with sip servers 1.  There is a sip server and a sip registrar.  The sip server and sip registrar can be one server or two different servers. The sip registrar is the server on which it is record…
this video summaries big data hadoop online training demo (http://onlineitguru.com/big-data-hadoop-online-training-placement.html) , and covers basics in big data hadoop .
When cloud platforms entered the scene, users and companies jumped on board to take advantage of the many benefits, like the ability to work and connect with company information from various locations. What many didn't foresee was the increased risk…

810 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