[asterisk-users] SIP over VPN -- no audio to other remote/VPN connected phones

[Ryan McCormack]

Hello,

I am having a problem with my current SIP over VPN setup.

We have a server running asterisk at our office. All the phones in the
office are on the same network / local to this server. We also have two
employees with home offices using SIP phones over VPN to connect to the
asterisk server. These phones have no problem with calls to the phones
in the office, however there is no audio when trying to place a call
from one remote phone to the other.

I'm assuming this is a routing issue, but I have no been able to come up
with a solution.

Thanks for any advice.

[Cary Fitch]

-----Original Message-----
From: asterisk-users-***@lists.digium.com
[mailto:asterisk-users-***@lists.digium.com] On Behalf Of Ryan McCormack
Sent: Monday, January 11, 2010 1:05 PM
To: asterisk-***@lists.digium.com
Subject: [asterisk-users] SIP over VPN -- no audio to other
remote/VPNconnected phones

Hello,

I am having a problem with my current SIP over VPN setup.

We have a server running asterisk at our office. All the phones in the
office are on the same network / local to this server. We also have two
employees with home offices using SIP phones over VPN to connect to the
asterisk server. These phones have no problem with calls to the phones
in the office, however there is no audio when trying to place a call
from one remote phone to the other.

I'm assuming this is a routing issue, but I have no been able to come up
with a solution.

Thanks for any advice.



[Cary Fitch]

One thought: if you are using "reinvite" try turning that off. That will be
a clue.

It would seem that both phones are on the local net via VPN, and should be
able to talk to each other if they can talk to anyone in the office. (As you
know.) So look for clues as to real paths to each other.

Cary Fitch

[Ryan McCormack]

canreinvite=no did the trick! Thanks!!

Post by Cary Fitch
[Cary Fitch]
One thought: if you are using "reinvite" try turning that off. That will be
a clue.
It would seem that both phones are on the local net via VPN, and should be
able to talk to each other if they can talk to anyone in the office. (As you
know.) So look for clues as to real paths to each other.
Cary Fitch

[Andrew Hakman]

Are you using openvpn? If so, there's an option in the server config
file that allows vpn clients to talk to other vpn clients, otherwise
they can only talk to the server. Using canreinvite=no is just forcing
the traffic to go through the server, which is why that makes it work.

I must say VPN + VOIP is an extremely powerful combination!

Andrew

canreinvite=no did the trick!  Thanks!!

Post by Cary Fitch
[Cary Fitch]
One thought: if you are using "reinvite" try turning that off. That will be
a clue.
It would seem that both phones are on the local net via VPN, and should be
able to talk to each other if they can talk to anyone in the office. (As you
know.) So look for clues as to real paths to each other.
Cary Fitch

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[Michelle Dupuis]

We have that solution running fine...

Is your VPN termination a Linux box? Is it also the office router? Is it
also the firewall?

-----Original Message-----
From: asterisk-users-***@lists.digium.com
[mailto:asterisk-users-***@lists.digium.com] On Behalf Of Ryan McCormack
Sent: Monday, January 11, 2010 2:05 PM
To: Asterisk Users List
Subject: [asterisk-users] SIP over VPN -- no audio to other
remote/VPNconnected phones

Hello,

I am having a problem with my current SIP over VPN setup.

We have a server running asterisk at our office. All the phones in the
office are on the same network / local to this server. We also have two
employees with home offices using SIP phones over VPN to connect to the
asterisk server. These phones have no problem with calls to the phones in
the office, however there is no audio when trying to place a call from one
remote phone to the other.

I'm assuming this is a routing issue, but I have no been able to come up
with a solution.

Thanks for any advice.

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[Ryan McCormack]

The VPN termination is a Cisco/Linksys RV042.

Post by Michelle Dupuis
We have that solution running fine...
Is your VPN termination a Linux box? Is it also the office router? Is it
also the firewall?