Error Message "Your Network Is Configured Such That You Can Not Make Phone Calls" with a Linksys Router

You may not be able to make phone calls or to start voice or video conversations with Windows Messenger. For example, when you try to dial a phone number in Windows Messenger version 4.6, you may receive the following error message:

This issue may occur if you are using any of the following Linksys EtherFast-series routers with firmware version 1.38 or earlier in your network:

• BEFSR11 EtherFast Cable/DSL Router
• BEFSR41 EtherFast Cable/DSL Router with 4-Port Switch
• BEFSR41W EtherFast Cable/DSL Wireless Ready Router with 4-port Switch
• BEFSR81 EtherFast Cable/DSL Router with 8-Port Switch
• BEFSRU31 EtherFast Cable/DSL Router with USB and 3-Port Switch
• BEFSX41 Instant Broadband EtherFast Cable/DSL Firewall Router with 4-Port Switch/VPN EndPoint
• BEFVP41 EtherFast Cable/DSL VPN Router with 4-Port 10/100 Switch
• HPRO200 HomeLink PhoneLine 10M Cable/DSL Router

To resolve this issue, obtain a firmware update for your Linksys router. For more information about obtaining a firmware update for your product, visit the following Linksys Web site: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

Linksys firmware versions 1.40 and later support Universal Plug and Play (UPnP) and work with Windows Messenger version 4.6.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.