Error Message:

  • Article

No ISDN channels are available to make the call.

Explanation:

All of the available ISDN channels are busy. Typically, ISDN provided in the BRI (Basic Rate Interface) level of service offers two channels on which voice or data calls can be made. If both channels are in use, Network and Dial-up Connections is not able to dial out.

User Action:

Hang up one channel and then redial.