SSH with TelnetConnection error: Key exchange failed: Expected SSH_MSG_KEX_GEX_GROUP

We are considering using TelnetConnection with SSH_SUPPORT but are getting this exception:

>> 131137.335:Connection handler hostName-19804:PROG:com.mslv.activation.protocol.telnet.SshTelnetImpl:

com.maverick.ssh.SshException: com.maverick.ssh.SshException

        at com.maverick.ssh.components.jce.DiffieHellmanGroupExchangeSha1.performClientExchange(Unknown Source)

        at com.maverick.ssh2.TransportProtocol.e(Unknown Source)

        at com.maverick.ssh2.TransportProtocol.processMessage(Unknown Source)

        at com.maverick.ssh2.TransportProtocol.startTransportProtocol(Unknown Source)

        at com.maverick.ssh2.Ssh2Client.connect(Unknown Source)

        at com.maverick.ssh.SshConnector.connect(Unknown Source)

        at com.maverick.ssh.SshConnector.connect(Unknown Source)

        at com.mslv.activation.protocol.telnet.SshTelnetImpl.connect(SshTelnetImpl.java:707)