Access to Another Portal as External Application

Hi,
From within my Portal, I'm trying to access another one of my company's Portal as external application. So I defined the following on my Portal's External Application Login page:
Application Name: XXX portal
Login URL: http://hostname/pls/portal30_sso/PORTAL30.wwptl_login.login_url
User Name/ID Field Name: ssousername
Password Field Name: password
Type of Authentication: POST
But The above doesn't do it though. I also tried
/hostname/pls/portal30/portal30.wwsec_app_priv.process_signon but no avail either.
Has anyone been able to do this? Thanks. Binh.

Try http://host:port/pls/portal_dad/portal_schema.wwptl_login.login_url?ssousername=include_username_here&password=include_password_here&p_requested_url=http://host:port/pls/portal_dad/portal_schema.home&p_cancel_url=http://www.oracle.com

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Access to Another Portal as External Application

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