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mikebrown Posted:
there, Please
check out -

In The Forum:
Hard Wiring - Installation
Hardwiring in a Rental House
On Oct 24, 2017 at 22:29:48

mikebrown Posted:
Hello, I think
you should consult
it with the Expert
they can surely
help you

In The Forum:
Hard Wiring - Installation
Hardwiring in a Rental House
On Jun 24, 2017 at 09:15:34

Haniltery Posted:
For wipe call
history also some
of the offline, in
gengral , it
usually apply to

In The Forum:
How to Delete call history from online account?
On May 09, 2017 at 06:14:26

diana87 Posted:
You have to use
VPN service to
and get free
access while

In The Forum:
Recent calling problem from Egypt
On May 02, 2017 at 17:28:06

dconnor Posted:
What is the main
number on the
account? And
which one is the
virtual number?

In The Forum:
Vonage UK
How do you call 999
On Apr 27, 2017 at 18:52:02

Trafford Posted:
Seems like a
question. We
rely exclusively
on a Vonage system
for our

In The Forum:
Vonage UK
How do you call 999
On Apr 27, 2017 at 10:42:50

diazou Posted:
Hello, It's
compatible with
Android your phone
? Thanks!

In The Forum:
IP PBX for small business
On Mar 28, 2017 at 12:42:33

jeddaisg Posted:
Hi all We have
a Vonage VOIP
system for our
office. Lately,
our call quality

In The Forum:
Ethernet Cable; Wiring schematic? 568-B?
On Feb 23, 2017 at 18:33:52

beast321 Posted:
I don't know if
you heard, that
many more
Dreamcast games
are opened up

In The Forum:
Fax - Tivo - Alarms
Using phone as a dial up modem for Dreamcast Gaming
On Feb 16, 2017 at 03:16:51

Av8rix Posted:
Sorry to start a
new thread on an
old topic but when
I google “Vonage
MAC address

In The Forum:
New adapter and router -- MAC change
On Jan 11, 2017 at 01:07:21

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Vonage I wish it were something simple I was doing wrong. No NAT int the mix, not even a firewall.

I wish it were something simple I was doing wrong. No NAT int the mix, not even a firewall. I get the 200 OK to my invite and successfully send an ACK. I can see in ethereal that Vonage's RTP is coming, and it's headed to the correct port, of the INCORRECT IP ADDRESS. My SDP clearly says a separate IP and for inbound calls, this works. Now I suppose it may not be CISCO, but for every single SDP I have exchanged with Vonage and we're talking about VERY many for this testing, they have ALL said Cisco GWUserAgent, which kinda gives it away. I wish it was Sonus in a way because Sonus does SIP INFO DTMF, which Cisco can receive, but does not send. And no, its SENDING to the WRONG address alltogether. My RTP is done via a Brooktrout TR2020 board, with its own IP. ALL SIP is done via an ethernet interface on my windows server. So the thing about "Vonage session border controller therefore sees the RTP you send coming from a different address" is not it, because the RTP does come from the proper address, the brooktrout address. Instead the Vonage session border controller simply assumes that it should send to the SIP address.

I have solved this by altering my application and using a NAT, in theory it's solved. In practice however, this extra HOP does degrade quality, but that could be because I used a $50 NAT just to try it out. I assume that by getting a good Pix in there or something I should be good.

Believe me when I say this is an issue with something not on my end. Our brooktrout support has agreed with us on it. You are correct, it may not be a cisco bug, but it's on Vonage's network. I have noticed they keep like 4+ relays in the loop ALL the time, which is quite silly I think and it is something I have never seen Cisco equipment do. I think it's quite an interesting issue and I appreciate you're taking the time to read this post. It is quite hard to find very experienced people in Voip. Everyone thinks they know it, but very few do. I am proud to say I have actually read RFC 3261 and 2327 completely (I probably shouldn't brag about that ;) If you're interested I can send you some Ethereal scans to look at.

Read The Full Thread:

SIP and RTP to separate IP Addresses, is this a Cisco bug?

Hello, I am an application developer with a soft-PBX type system running with
"but when I call outbound the vonage network (i.e. Cisco Gateways) sent RTP (i.e.
So it seems Vonage's gateway developer (who I can only guess is Cisco) does not
I'm not sure I understand exactly what you are trying to do, but I doubt your supposition
you shoulld only use the rtp relay when behindf a nat'd device
Interesting. I still think a Cisco bug seems unlikely, only because I've worked

Dnova posted "I wish it were something simple I was doing wrong. No NAT int the mix, not even a firewall." on 04/29/2005

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