Search found 7 matches

by Stefan
Wed Jun 09, 2010 7:14 am
Forum: Miscellaneous Discussion Topics
Topic: Some general questions about H.323 and SIP
Replies: 15
Views: 22198

Re: Some general questions about H.323 and SIP

Hi Send us the capture file. You can upload it to the forum as an attachment. this could be difficult because the file is about 138 MB. But I looked at the file and saw that there is only one registration Confirm after two registration Requests. So there should be no problem. The Confirm is a repons...
by Stefan
Tue Jun 08, 2010 2:58 pm
Forum: Miscellaneous Discussion Topics
Topic: Some general questions about H.323 and SIP
Replies: 15
Views: 22198

Re: Some general questions about H.323 and SIP

Hi Paul, 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 num...
by Stefan
Tue Jun 08, 2010 9:34 am
Forum: Miscellaneous Discussion Topics
Topic: Some general questions about H.323 and SIP
Replies: 15
Views: 22198

Re: Some general questions about H.323 and SIP

Hi Paul today we discoverd some weird behavior of our WLAN-VoIP problem. The mobile device does a registration request. After some time with no answer it does the registration request again. Shortly after this there are two registration confirm messages to the device. But the device answers with a d...
by Stefan
Wed Jun 02, 2010 7:57 am
Forum: Miscellaneous Discussion Topics
Topic: Some general questions about H.323 and SIP
Replies: 15
Views: 22198

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 kludges...
by Stefan
Tue Jun 01, 2010 7:58 am
Forum: Miscellaneous Discussion Topics
Topic: Some general questions about H.323 and SIP
Replies: 15
Views: 22198

Re: Some general questions about H.323 and SIP

Hi everybody. Bandwidth is really still a problem. Here in the US, you're lucky to get good 3G coverage and, when you do have it, the jitter and delay are horrible. I ran Skype over 3G once... it wasn't worth it. I have never had such a horrible phone call before. Perhaps the carriers can do better ...
by Stefan
Fri May 28, 2010 3:00 pm
Forum: Miscellaneous Discussion Topics
Topic: Some general questions about H.323 and SIP
Replies: 15
Views: 22198

Re: Some general questions about H.323 and SIP

Hey Paul. Thanks a lot for your detailed answer. Some Points made me think a lot ;) Yeah, most will just argue that SIP is better because they were told so, but have no actual hands-on experience. Truth is, the work required to implement either SIP or H.323 is about the same. Back in 2000, Jeff Pulv...
by Stefan
Thu May 27, 2010 1:52 pm
Forum: Miscellaneous Discussion Topics
Topic: Some general questions about H.323 and SIP
Replies: 15
Views: 22198

Some general questions about H.323 and SIP

Hi erverybody! 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 argume...