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LanScape VOIP Media Engine™ - Pre-Sales Technical Support
LanScape Support Forum -> LanScape VOIP Media Engine™ - Pre-Sales Technical Support

Topic: VB.NET example question - will not start media engine.

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simplikate
Intermediate

Joined: June 20 2007
Location: United States
Posts: 7

Posted: August 01 2007 at 6:28pm \| IP Logged

I am having an issue while running the sample code for your VB.net example for the DotNetSupport. I replaced the latest DLL, and the LanScapeVME.vb file with the one provided for my installation.

I have two problems:

1) The sample code shows the following:
"MediaEngine.InitializeMediaEngine(0)"

however, the InitializeMediaEngine method takes two parameters, not one - so the sample fails right off the bat. To solve this, I just declared two UInteger vars and placed them like so:
"MediaEngine.InitializeMediaEngine(0,0)" -- and it seems to work.

I then try to continue and encounter a second problem...

2) I set the StartParams, and enter my host into the area where I enter my host information:
IpAddressOfThisHost(0) = 192
IpAddressOfThisHost(1) = 168
IpAddressOfThisHost(2) = 1
IpAddressOfThisHost(3) = 39

and leave all other paramters to default. Once I get to the point where it looks for SipSuccess,
ie:

status = MediaEngine.StartSipTelephony(StartParams)
if status <> VoipMediaEngine.TELEPHONY_RETURN_VALUE.SipSuccess then
Console.WriteLine("StartSipTelephony() Error.")

I am getting the following error code back: "SipUnknownHost {4}"

The documentation on the media engine says that this can be a UNC or DNS issue, but I am specifying the IP addres, and this is for sure my local IP address. I also tried setting it to 127.0.0.1 - but no luck. There are no other hosts I am supplying - please advise.

support
Administrator

Joined: January 26 2005
Location: United States
Posts: 1666

Posted: August 01 2007 at 7:12pm \| IP Logged

The InitializeMediaEngine() proc you have figured out. you just had to specify a default stack size using the second parameter.

I think the call to StartSipTelephony() is failing because you have left the default settings for the "event log server" enabled. Look in the code for the following 3 lines:

Code:

public EnableEventLogServer as Boolean = True

public EventLogServer as String = "ps"

public EventLogServerPort as Int32 = 19001

Either set the EnableEventLogServer to False or set the EventLogServer value to you IP address or host name.

There are other changes you may have to make (like using a SIP proxy) but you should be able to locate these as you step through using the debugger.

Support

simplikate
Intermediate

Joined: June 20 2007
Location: United States
Posts: 7

Posted: August 01 2007 at 7:26pm \| IP Logged

Yep! That was it. Once I set the values to the sipLog and eventLog servers it worked perfectly. Thanks!

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