If the system has an active outbound call 

Use this troubleshooting procedure to get the PortAssist Manager to work when the following message appears on Network View of PortAssist Manager:

Agent not responding

This problem happens when a PortAssist Manager server and a second server with Digi adapters are configured to allow dialout calls. (Note: Only the server being viewed need be configured for dailout.) The system you are dialing out from will appear as if it is not responding. 

Cause Resolution
The UDP traffic from the second server cannot be routed to the PortAssist Manager server. Do the following.
  1. Go to My Computer and choose Dialup Networking > Phonebook entry-to-dial.
  2. When the phonebook entries appear, choose the phone entry with which you are working.
  3. Choose More > Edit entry and modem properties.
  4. In the Edit Phonebook Entry window, choose server.
  5. In Network protocols, choose TCP/IP Settings.
  6. In PPP TCP/IP Settings, uncheck Use default gateway on remote network.
  7. Choose OK.