Sign up
 Vonage  

       
 
Vonage Forum Menu

Vonage Forums
Vonage VoIP Forum
tplink Posted:
Im trying to add
my HT802 vonage
adapter to my home
network. I
currently have
...

In The Forum:
Hard Wiring - Installation
Topic:
Vonage behind switch
On Dec 05, 2016 at 06:35:11

DWSupport Posted:
After recent
Vonage update that
took place on the
4th and 5th of
Nov. E-mails with
...

In The Forum:
Vonage
Topic:
Voicemail Not Forwarding to Outlook Accounts
On Nov 10, 2016 at 12:23:26

peterlee Posted:
Had a call from a
Hospital in Ajax,
Ontario to my home
in
Scarborough, Onta
rio
...

In The Forum:
Vonage Canada
Topic:
Hospital Incoming call unable to connect
On Nov 08, 2016 at 11:59:50

TELLDOUG Posted:
I am looking for a
product that will
make my phone ring
louder so I can
hear using
...

In The Forum:
Vonage
Topic:
Looking for a ringer ameliorate
On Oct 26, 2016 at 09:21:30

HildBeft Posted:
You can recollect
password by
connecting the
router to your pc
and open the
browser
...

In The Forum:
Hard Wiring - Installation
Topic:
How to arrive at wifi password?
On Oct 20, 2016 at 05:05:49

HildBeft Posted:
Great tips..
Thanks for sharing
...

In The Forum:
Hard Wiring - Installation
Topic:
How to have Vonage and another land line?
On Oct 20, 2016 at 04:55:03

massrman Posted:
The devices are
available at
different price
margins , please
share your
estimated
...

In The Forum:
Vonage
Topic:
IP PBX for small business
On Sep 30, 2016 at 00:48:03

massrman Posted:
Hi these are most
commonly used SIP
PBX interops and
their
configuration
guides,
...

In The Forum:
Vonage
Topic:
IP PBX for small business
On Sep 30, 2016 at 00:37:45

Sammy00 Posted:
Has anyone setup a
W52p phone for
vonage? I have
a W52p with two
wireless handsets,
...

In The Forum:
Hard Wiring - Installation
Topic:
W52p Setup
On Aug 30, 2016 at 10:38:01

James44 Posted:
Hi, I am
looking for a good
Sip Trunking
provider in
Canada. they
should offer
...

In The Forum:
Vonage
Topic:
A good sip trunking provider
On Jul 17, 2016 at 23:42:46


Vonage VoIP Forums

Vonage In The News
Vonage Holdings Corp. Reports Fourth Quarter and Full Year 2013 Results

Carolyn Katz Elected to Board of Directors of Vonage Holdings Corp.

Syndication

Vonage Customer Reviews
Vonage vs. Time Warner Cable SoCal
Vonage vs. Time Warner Cable SoCal



Vonage UK Review
Vonage UK Review



Vonage Pros and Cons for 2006
Vonage Pros and Cons for 2006



Vonage, a VT2142 and a RTP300, My Experiences - A Detailed Review
Vonage, a VT2142 and a RTP300, My Experiences - A Detailed Review



Salt Lake City: impressions after several months
Salt Lake City: impressions after several months




Vonage Reviews


Post new topic   Reply to topic  Vonage® VoIP Forum - Vonage News, Reviews And Discussion » Vonage Forum Archive
Author Message
Dnova
New Forum Member
New Forum Member


Joined: Apr 15, 2005
Posts: 9

PostPosted: Fri Apr 22, 2005 1:55 pm    Post subject: SIP and RTP to separate IP Addresses, is this a Cisco bug? Reply with quote Back to top

Hello,
I am an application developer with a soft-PBX type system running with Vonage service. Inbound works great, but when I call outbound the Vonage network (i.e. Cisco Gateways) sent RTP (i.e. voice) on the same address as they send SIP. Now when I get calls inbound everything is fine because the SDP I negotiate sets the RTP interface with
c= IN IP4 xxx.xxx.xxx.xxx
m= audio portnumer RTP/AVP 18 101

I set these same parameters in an outbound call's SDP but I do not get the backets to the address in c= (or even in o= which I forced to the RTP interface also).

Again, works fine for inbound calls, not for outbound. Anyone aware what could cause such issues. My guess is either Cisco configuration or a bug in their software.

Please help!
View user's profile Send private message
Eddy
Vonage Forum Junior
Vonage Forum Junior


Joined: Apr 05, 2005
Posts: 30
Location: Montreal, QC

PostPosted: Mon Apr 25, 2005 10:19 am    Post subject: Reply with quote Back to top

"but when I call outbound the Vonage network (i.e. Cisco Gateways) sent RTP (i.e. voice) on the same address as they send SIP."

Same address? you mean port?
Some providers break the rfc and assume that the user is behind a dumb router that doesn't NAT properly (random ports) so they send and receive on the same port used for SIP.

you use direct connection using sip_user@i-p.com ? without going through Vonage SIP gateways/proxies?

"I set these same parameters in an outbound call's SDP but I do not get the backets to the address in c= (or even in o= which I forced to the RTP interface also). "

Did you do SIP before getting to SDP?
Check your invite, are you being asked for authentication?
any Unauthorized packets coming in?
any packets at all?
View user's profile Send private message
Dnova
New Forum Member
New Forum Member


Joined: Apr 15, 2005
Posts: 9

PostPosted: Wed Apr 27, 2005 7:56 pm    Post subject: doh! Reply with quote Back to top

So it seems Vonage's gateway developer (who I can only guess is Cisco) does not support what I want to do. The fact that it works inbound seems to have puzzled them too. I just love when a vendor says 'we don't support it' not "wow, that's a very obscure bug, thank you for finding it". So I am convinced this is a bug in cisco's gateways.

I would also mention that some of this Simplex issue people have been having (only one side being heard) could be due to the same thing, because the reroute of RTP packets does not occur properly. Allow me to explain because this is part of what makes Voip so much better from the provider standpoint than TDM / Traditional systems. Voip allows my gateway (as in I am the provider) to still control signaling while routing the voice traffic directly between two end points. Now some ASCII art:

caller A Voip Prodivder Called B
---------------> (call aka INVITE)------------->
<------------- (answer OK) <-----------
now on to talking
----------------Direct UDP---------------------->
<--------------Direct UDP-----------------------

So the call control is maintained, but the voice is free to travel a shorter path should one be available. Sadly it does not seem that someone either wants us doing this (it could be construed as a carrier type operation) or as I believe it was simply a development bug.
View user's profile Send private message
sajer
Full Forum Member
Full Forum Member


Joined: Dec 16, 2004
Posts: 59

PostPosted: Wed Apr 27, 2005 11:06 pm    Post subject: Reply with quote Back to top

I'm not sure I understand exactly what you are trying to do, but I doubt your supposition that it is a Cisco bug is correct. The signaling goes through Vonage's own (homegrown) proxy before it gets to a Cisco gateway, and for that matter Vonage uses Sonus gateways as well as Cisco.

But back to your problem. You say that you construct the SDP on the outbound INVITE, and you expect to receive the RTP packets at the address you specified in the SDP. So far so good. I'm a bit confused, though, about your statement that you think this is related to SIP and RTP coming from the same address on the far end (i.e., on the Vonage end). That would seem normal to me, if you are going through a Vonage session border controller.

Anyways, again back to your problem. First, setting aside the problem where you don't receive packets on the outbound call -- what about the SIP signaling ? Do you get a response to your INVITE and do you in fact get the call properly set up from a SIP standpoint (i.e., a 200 OK received from the far end)? I assume you are, because if not that would be the place to start. So if you are, and you are simply not getting RTP packets to the address you specify in the SDP, then my question would be whether you are going through a NAT device on your network. If so, and the Vonage session border controller therefore sees the RTP you send coming from a different address than that you specify in the SDP, it may be sending back to that address (i.e the source of the packets it receives) rather than the address you specify in the SDP. This would be typical for a session border controller providing an RTP relay function.

Anyways, your situation is interesting; I wish you would provide more of the pertinent details.
View user's profile Send private message
Dnova
New Forum Member
New Forum Member


Joined: Apr 15, 2005
Posts: 9

PostPosted: Fri Apr 29, 2005 1:42 pm    Post subject: no, it's not that simple Reply with quote Back to top

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 Wink If you're interested I can send you some Ethereal scans to look at.
View user's profile Send private message
enigma91884
Vonage
Representative
Vonage<br>Representative


Joined: Apr 15, 2005
Posts: 134

PostPosted: Fri Apr 29, 2005 1:50 pm    Post subject: Reply with quote Back to top

you shoulld only use the rtp relay when behindf a nat'd device
View user's profile Send private message
sajer
Full Forum Member
Full Forum Member


Joined: Dec 16, 2004
Posts: 59

PostPosted: Fri Apr 29, 2005 6:39 pm    Post subject: Reply with quote Back to top

Interesting. I still think a Cisco bug seems unlikely, only because I've worked with Cisco gateways in the configuration you have, where the sip and rtp are on different addresses. I still think a Vonage proxy or SBC is a likelier candidate. I would be interested in seeing those ethereal traces if you care to post them or send them to me.
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


All times are GMT - 5 Hours

Vonage Service Plans


Vonage VoIP Members
Members List Members
New jacobxf60
New Today 5
Yesterday 10
Total 99031

Who Is On Site
Visitors 121
Members 0
Total 121


Vonage VoIP Forum Members:
Login Here
Not a Member? You can Register Here
As a registered member you will have access to the VoIP Speed Test, Vonage Service Announcements and post comments in the
Vonage VoIP Forums

Vonage Stock Price
Value: 6.725
Change:   N/A
Up to 15 Minute Delay

Site Search
 






†AK and HI residents pay $29.95 shipping. ††Limited time offer. Valid for residents of the United States (&DC), 18 years or older, who open new accounts. Offer good while supplies last and only on new account activations. One kit per account/household. Offer cannot be combined with any other discounts, promotions or plans and is not applicable to past purchases. Good while supplies last. Allow up to 2 weeks for shipping. Other restrictions may apply.

1Unlimited calling and other services for all residential plans are based on normal residential, personal, non-commercial use. A combination of factors is used to determine abnormal use, including but not limited to: the number of unique numbers called, calls forwarded, minutes used and other factors. Subject to our Reasonable Use Policy and Terms of Service.

2Shipping and activation fees waived with 1-year agreement. An Early Termination Fee (with periodic pro-rated reductions) applies if service is terminated before the end of the first 12 months. Additional restrictions may apply. See Terms of Service for details.

HIGH SPEED INTERNET REQUIRED. †VALID FOR NEW LINES ONLY. RATES EXCLUDE INTERNET SERVICE, SURCHARGES, FEES AND TAXES. DEVICE MAY BE REFURBISHED. If you subscribe to plans with monthly minutes allotments, all call minutes placed from both from your home and registered ExtensionsTM phones will count toward your monthly minutes allotment. ExtensionsTM calls made from mobiles use airtime and may incur surcharges, depending on your mobile plan. Alarms, TTY and other systems may not be compatible. Vonage 911 service operates differently than traditional 911. See www.vonage.com/911 for details.

** Certain call types excluded.

www.vonage-forum.com is not an official Vonage support website & is independently operated.
All logos and trademarks are property of their respective owners. All comments are property of their posters.
All other www.vonage-forum.com content is © Copyright 2002 - 2013 by 4Sight Media LLC.

Thinking of signing up for Vonage but have questions?
Business and Residential customers can call Toll Free 24 hours a day at: 1-888-692-8074
No Vonage Promotion Code or Coupon Codes are required at www.vonage.com to receive any special,
best Vonage cheap deals, free sign up offers or discounts.

[ | | | | | ]

Vonage Forum Site Maps

Vonage | VoIP Forum | How VoIP Works | Wiring and Installation Page Two | International Rate Plans 2 | Internet Phone
Promotion | Vonage Review | VoIP | Broadband Phone | Free Month | Rebate | Vonnage | Vontage | VoIP | Phone Service
Phone | llamadas ilimitadas a Mexico | Latest News | VoIP Acronyms | Deal | Philippines Globe Phone | Site Maps

The Vonage Forum provides the Vonage sign up Best Offer Promotion Deal.
If you are considering signing up for Vonage and have found our Vonage News, Customer Reviews, Forums
& all other parts of this site useful, please use our Vonage Sign up page.


Vonage VoIP Phone Service is redefining communications by offering consumers
& small business VoIP Internet phones, an affordable alternative to traditional phone service.
The Vonage VoIP Forum Generated This Page In: 2.98 Seconds and 310 Pages In The Last 60 Seconds
The Vonage VoIP Forum