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Joined: January 26 2005
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| Posted: May 25 2006 at 9:31am | IP Logged
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micro,
Item 1 - Call transfer.
The v5.11 Media Engine supports blind call transfer using the SIP BYE-Also method. We tested call transfers using AXON 1.6. Unfortunately, AXON does not pass the SIP "Also:" header that is contained in a SIP BYE message. What this means is that a call transfer acts the same as simply terminating the call. So you will have to contact the NCH company and ask them why they do not support the "Also:" SIP header.
We will be including support for assisted call transfers using the REFER method in a future release but we can not speculate on when this will occur.
Item 2: Call conferencing.
The VOIP Media Engine can conference any number of calls. So this will not be an issue no matter what PBX or SIP Proxy/Media Proxy you deploy. Use the Multi-line soft phone example to test this. On one soft phone call 2 other machines. Then press the “Conf” button to place both phone lines into a conference session. All three SIP endpoints will now be in a 3 way conference call. There is no logical limitation on how many calls can be conferenced.
Item 3: Call recording.
As we stated in an earlier post, the application software you design around the Media Engine will have access to all received and transmitted RTP audio data on a per phone line basis. What this means is that you can do whatever you want with it. If you want to perform call recording to a file, take the Rx and Tx media streams for the phone line, digitally mix them and write them to a file. It’s that simple.
Item 4: VAD
What exactly do you want to know about VAD? Need to be more specific. The Media Engine can detect when a user speaks and then transmits the voice data. If a user is in a call and is not speaking, then no RTP voice data will be transmitted. This applies to all supported codecs.
Item 5: Simultaneous calls.
The VOIP Media Engine was designed to handle many calls all at the same time. This is what it lives for. You will have no problems handling many calls all at once.
Other Info:
The sample applications are supplied so you can investigate some of the capabilities of the Media Engine. It is up to you to experiment with these samples and play with the source code on your own to become familiar with the product. As time goes by, we will improve the samples and possibly offer additional user documentation. It is also a good idea to have some minimal knowledge of SIP. This way you can diagnose your own problematic situations. Also, to become familiar with the Media Engine, please refer to the Software Developer Reference as much as possible. If you have suggestions on how we may improve the product, we welcome your feedback.
When you post questions, we ask that you get a bit more specific. What you are doing is laying out "bullet point" like questions. We could spend hours and hours trying to offer you information and find out that we are not answering your specific concern. We offer great pre sales support but it is limited. Help us help you by asking specific questions. Thanks for your help.
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LanScape Support Forum -> LanScape VOIP Media Engine™ - Pre-Sales Technical Support
Topic: other important functions help
