Commented Issue: Use SshClient to connect to Avaya Media Gateway [1458]

I am trying to create a small app to work on Avaya Media Gateways using Renci.SshNet. I am stuck with opening an ssh connection to the gateway. When I issue an sshClient.Open(), the program gives NullReferenceException

The ssClient object says that 3des-cbc and hmac-md5 are used. The GW uses ssh2

I am able to connect with this app to my own linux box.

Any suggestions?
Comments: ** Comment from web user: olegkap **

Can you track down to where it throws NullReference connection?
Also, is it possible for me to connect to this server to see the problem for myself?
You can send me logon info privately.

Thanks,
Oleg