Web Client Connects but the RTC Client Fails to Connect

I have some IBM Internal developers trying to connect to my RTC 3.0 Jazz Team Server. They happen to be in India. Som of them are connecting with the RTC client just fine, while other are getting this error...
CRJAZ0099I When accessing the URL "https://rtpariande.raleigh.ibm.com:9443/ccm/ver....." Remote host closed connection during handshake. SSL peer shutdown incorrectly.
They can all connect with the web client just fine.
The ones have the issues have already connected with the RTC client remotely from home. This error occurs when they now try to connect from their IBM office. It looks like something to due with the ssl certificate.
Any suggestions. This is a classroom server for instruction without self signed certs.
CRJAZ0099I When accessing the URL "https://rtpariande.raleigh.ibm.com:9443/ccm/ver....." Remote host closed connection during handshake. SSL peer shutdown incorrectly.
They can all connect with the web client just fine.
The ones have the issues have already connected with the RTC client remotely from home. This error occurs when they now try to connect from their IBM office. It looks like something to due with the ssl certificate.
Any suggestions. This is a classroom server for instruction without self signed certs.