Voice over IP: Difference between revisions
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#Uncheck: ''Enable Adaptive Echo Canceller'' | #Uncheck: ''Enable Adaptive Echo Canceller'' | ||
After that, I can make a call, and it is also possible to run the ''Audio Wizard...''. | After that, I can make a call, and it is also possible to run the ''Audio Wizard...''. | ||
I found this by trial and error, first I disabled everything in the 'Audio' tab, and reduced the sample rate, then I | |||
I found this by trial and error, first I disabled everything in the 'Audio' tab, and reduced the sample rate, then I gradually enabled everything again. | |||
In SJ Labs forum http://forum.sjphone.org/viewtopic.php?t=1589&highlight=aec you can read the following: | |||
:''Bugs and issues in 1.65'' | |||
:''1. Although there is a Video tab on the Options panel, this build does not support Video.'' | |||
:''2. AEC may work unstably if you use some old audio boards, or use different devices for input and output audio (for example, a USB mic and on-board audio system).'' | |||
:''3. SJphone may deliver sound with less high frequency. In this case, reduce Driver sampling rate to 8000 (Options -> Audio -> Advanced Audio Settings).'' | |||
This might explain my problem, but I was able to run it on the same Dell D620 without any problems, when it was running Windows XP. | |||
* [http://www.sjlabs.com/ SJ Labs Homepage] | * [http://www.sjlabs.com/ SJ Labs Homepage] | ||
Revision as of 12:10, 22 August 2007
Soft Phones
SJphone
SJphone is a free VOIP softphone. It can be installed on:
- Windows (XP SP2, 2000 SP4, Vista, Vista x64), Windows CE (Pocket PC, Windows Mobile), Linux, MAC
It supports both SIP and H.323 standards, and has a brilliant logging feature if you are having trouble getting a call through.
Note for Vista x64 (64 bit version) users:
On my Dell Lattitude I couldn't make a call or run the Audio Wizard, it crashed the program. I found a workaround:
- Select: Menu -> To Advanced Mode
- Select: Menu -> Options
- Select: the Audio tab.
- Select: Advanced Settings...
- Uncheck: Enable Adaptive Echo Canceller
After that, I can make a call, and it is also possible to run the Audio Wizard....
I found this by trial and error, first I disabled everything in the 'Audio' tab, and reduced the sample rate, then I gradually enabled everything again.
In SJ Labs forum http://forum.sjphone.org/viewtopic.php?t=1589&highlight=aec you can read the following:
- Bugs and issues in 1.65
- 1. Although there is a Video tab on the Options panel, this build does not support Video.
- 2. AEC may work unstably if you use some old audio boards, or use different devices for input and output audio (for example, a USB mic and on-board audio system).
- 3. SJphone may deliver sound with less high frequency. In this case, reduce Driver sampling rate to 8000 (Options -> Audio -> Advanced Audio Settings).
This might explain my problem, but I was able to run it on the same Dell D620 without any problems, when it was running Windows XP.
Service Providers
Links
- Microsoft Real-Time Communications: Protocols and Technologies
- MSDN Webcast: Visual C# Express 2005: Creating an Instant Messaging Application Part 2 of 3
- SIP stack with SIP proxy - (VOIP)
Tech-invite
- ABNF Grammar for SDP -- Session Description Protocol (RFC 4566)
- SIP Protocol Structure through an Example
<google>ENGELSK</google>