On the Communication Manager CLI, type list media-gateway.
On the MEDIA GATEWAY REPORT screen, verify that the value of the Serial no/FW Ver/HW Vint/RecRule field for Branch Gateway is 40.2.0 or greater.
ADDITIONAL INFORMATION:
If the value is less than 40.2.0, upgrade the firmware. For more information, see Deploying and Upgrading AvayaG450 Branch Gateway or Deploying and Upgrading AvayaG430 Branch Gateway.
