My master app does a blind transfer to another app using this code -
this.blindTransferActivity1.CalledParty = new SipUriTelephonyAddress(new SipUri(SipUriScheme.Sip, "2222", "192.168.2.5", 0, "transport=tcp;foo=Marshall"));
The other app has this code -
string sName = "George";
if (QueryString != null && QueryString["foo"] != null)
sName = Uri.UnescapeDataString(QueryString["foo"]);
statementActivity1.MainPrompt.AppendText("Welcome to custom app one {0}", sName);
The prompt always plays "George". It seems that the QueryString is always null. In fact if you remove the test the app blows up with a null error message.