Search found 593 matches

by paulej
Mon Nov 29, 2010 12:12 am
Forum: OpenID Provider Server
Topic: Welcome to the OpenID Provider Server forum
Replies: 0
Views: 18931

Welcome to the OpenID Provider Server forum

Folks,

This forum was created to allow people to discuss the OpenID Provider Server software published by Packetizer. If you have any questions or comments about the software, feel free to post them to this forum.

Cheers!
Paul
by paulej
Mon Aug 30, 2010 3:15 am
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: What does H.323 and SIP do?
Replies: 1
Views: 18393

Re: What does H.323 and SIP do?

H.323 and SIP are protocols to allow voice and video communications over the Internet. They are widely used in various products from manufacturers, including Cisco, Polycom, Lifesize, etc. There are also used by many service providers, including AT&T, Verizon, France Telecom, China Unicom, NTT, ...
by paulej
Tue Jun 08, 2010 3:35 pm
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: Some general questions about H.323 and SIP
Replies: 17
Views: 49770

Re: Some general questions about H.323 and SIP

In the screen shot, I also see ARQs. It appears that calls are starting and stopping. It also appears that packets are getting dropped. Note that a few times, Wireshark reported that a TCP packet was a re-transmission. If TCP is being re-transmitted, I'd bet a few UDP packets are getting lost. Packe...
by paulej
Tue Jun 08, 2010 1:37 pm
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: Some general questions about H.323 and SIP
Replies: 17
Views: 49770

Re: Some general questions about H.323 and SIP

Stefan, If a device sends an RRQ to the GK and then sends another RRQ, it's OK if it gets two RCF messages, because they should essentially be the same thing. The two RRQs should be re-tries and the GK should recognize those as such. In the RRQ, do you see the same or different request sequence numb...
by paulej
Wed Jun 02, 2010 2:22 pm
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: Some general questions about H.323 and SIP
Replies: 17
Views: 49770

Re: Some general questions about H.323 and SIP

Hi Paul if found this statement in an other forum SIP itself isn't really workable behind NAT routers, and that has led to some kludges that have helped it along. Not easily, and not as well as if it had been designed to handle being handed out a private IP in the first place, but so far the kludge...
by paulej
Tue Jun 01, 2010 2:48 pm
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: Some general questions about H.323 and SIP
Replies: 17
Views: 49770

H.323 and SIP NAT/FW traversal

I've read some things about NAT and Firewalls and VoIP. Some say with H.323 its more easier others say its easier with SIP becuase of the SIP Proxy. I don't know much about NAT and Firewalls. The only thing I know is that H.323 is working at the university we have installed it and they use NAT and ...
by paulej
Mon May 31, 2010 10:21 pm
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: Some general questions about H.323 and SIP
Replies: 17
Views: 49770

Re: Some general questions about H.323 and SIP

One issue with the enterprise is that both H.323 and SIP fall a bit short on features needed for enterprise users. As such, a proprietary line-side protocol is probably better where features like park/pick-up, "boss/secretary", and other features are needed. Paul, do you think that H.450 ...
by paulej
Fri May 28, 2010 6:56 pm
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: Some general questions about H.323 and SIP
Replies: 17
Views: 49770

Re: Some general questions about H.323 and SIP

I was searching for an mobile phone which has some VoIP functionality some months ago. In every case I found devices with SIP implemented. This probably regards to the 3GPP. I also read a white paper from nokia where SIP is regarded as smaller and more efficient than H.323 and using other Protocols...
by paulej
Thu May 27, 2010 4:35 pm
Forum: Miscellaneous VoIP/Videoconferencing Topics
Topic: Some general questions about H.323 and SIP
Replies: 17
Views: 49770

Re: Some general questions about H.323 and SIP

My name is Stefan, I'm from Germany and at the moment I'm writing my diploma thesis about VoIP over WLAN / WiFi. While studying some Websites and Books I found out that most people think SIP is best fitting for VoIP. Finally I found this Website and it made me happy to see some arguments form an ot...
by paulej
Sat Mar 27, 2010 12:11 am
Forum: Announcements
Topic: OpenID Support
Replies: 0
Views: 22000

OpenID Support

We've added OpenID support to Packetizer Forums to make it easier to log in and create accounts! If you run your own phpBB board, you might also want to add OpenID Support to your site: http://www.zenorsoft.com/community/viewtopic.php?f=30&t=841 (Please be advised that the software from Zenorsof...