Solved

RTP Real Time Transport Protocol SIP

Posted on 2014-11-28
4
160 Views
Last Modified: 2014-12-03
Hi,
I have communication between client 1 and client 2 over SIP phones established. The signaling part is done and media is flowing between the SIP client 1 and 2. Now suppose the client 1's ip changes or port changes in between media flow during RTP . How will this be handled so as the communication continues properly.

Thanks
0
Comment
Question by:Rohit Bajaj
  • 2
4 Comments
 
LVL 15

Assisted Solution

by:Perarduaadastra
Perarduaadastra earned 200 total points
ID: 40470144
If the IP address of either endpoint changes during the call then the call is lost because the traffic can no longer find its destination. IP addresses shouldn't change during a call anyway; if they do this indicates a fault somewhere.

The range of ports used by RTP is determined when the session is established and, again, won't change unless there is an error.
0
 

Author Comment

by:Rohit Bajaj
ID: 40470248
I am bit confused here. As to why cant client1 inform client2 about the change in ip address or port ??
Client1 is having the direct ip of client 2
0
 
LVL 15

Expert Comment

by:Perarduaadastra
ID: 40470314
Why would there be a change in IP address of either client during the call?
0
 
LVL 20

Accepted Solution

by:
José Méndez earned 300 total points
ID: 40470340
Beyond the reason why a client needs to change its IP, the SIP protocol is not meant to handle such situations. That does not mean it can't be use to manipulate the media sessions, however a renegotiation needs to occur for the other endpoint to know what the new IP, codec, DTMF method, port and such will be used, that part would signify a brief period of no media.
0

Featured Post

New! My Passport Wireless Pro Wi-Fi Mobile Storage

Portable wireless storage to offload, edit, and stream anywhere.

High-capacity, wireless mobile storage designed to accompany professional photographers and videographers in the field to easily offload, edit and stream captured photos and high-definition videos.

Question has a verified solution.

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

Suggested Solutions

Meet the world's only “Transparent Cloud™” from Superb Internet Corporation. Now, you can experience firsthand a cloud platform that consistently outperforms Amazon Web Services (AWS), IBM’s Softlayer, and Microsoft’s Azure when it comes to CPU and …
If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…

867 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

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now