1. Standards Implementation and Testing Environment (SITE) Direct Transport Sandbox

2. Direct Transport Sandbox Components SITE Portal Direct Portlets Trust Bundle File Direct Java RI Direct.siteenv.org (Provider1@direct.sitenv.org) Synchronize every hour System Under Test (e.g direct2.sitenv.org) Send/Receive C-CDA files

3. Direct Transport Sandbox - Trust Anchor Exchange Portal Direct Portlets (Trust Anchor Exchange Portlet) Trust Bundle File Direct Java RI Direct.siteenv.org (Provider1@direct.sitenv.org) 3. Synchronize every hour System Under Test (e.g direct2.sitenv.org) 1. Upload Trust Anchor 2. Update Bundle 4. Download Trust Anchor or Trust Bundle C-CDA files SITE

4. Direct Transport Sandbox - SUT Sends message to SITE SITE Portal Direct Portlets (Trust Anchor Exchange Portlet) Trust Bundle File Direct Java RI Direct.siteenv.org (Provider1@direct.sitenv.org) System Under Test (e.g direct2.sitenv.org) 1. Send Message to provider1@direct.sitenv.org 2. Receive MDN from provider1@direct.sitenv.org C-CDA files

5. Direct Transport Sandbox - SUT Receives message from SITE Portal Direct Portlets (Trust Anchor Exchange Portlet) Trust Bundle File Direct Java RI Direct.siteenv.org (Provider1@direct.sitenv.org) System Under Test (e.g direct2.sitenv.org) 1. Enter Endpoint to receive message, select C-CDA and Hit Send 3. Message Sent from provider1@direct.sitenv.org toprovider1@direct.sitenv.org Entered endpoint. C-CDA files 2b. Send Message to SUT via Direct.sitenv.org 2a. Attach C-CDA to message 4. MDN sent from SUT to Direct.sitenv.org SITE