/mcp• You must have Cisco IOS Release 15.6(2)T or later. V.150 is not supported with Media Termination Point (MTP). We recommend that you remove MTP from devices, trunks, and gateways that are handling V.150 calls. Complete these tasks to configure two sets of media resource groups: a media resource group with MTP resources for non-V.150 calls, and a media resource group without MTP resources for V.150 calls. Procedure Purpose Command or Action You can configure the Media Resource Group with MTP for non-V.150 endpoints. Configure Media Resource Group for Non-V.150 Endpoints, on page 257 Step 1 Configure a Media Resource Group list that includes your MTP Media Resources for non-V.150 endpoints. Configure a Media Resource Group List for Non-V.150 Endpoints, on page 257 Step 2 Configure Media Resource Group without MTP resources for secure V.150 calls. Configure Media Resource Group for V.150 Endpoints, on page 258 Step 3 Configure a Media Resource Group list without MTP after adding the required resources in the Media Resource Group for secure V.150 endpoints. Configure a Media Resource Group List for V.150 Endpoints, on page 258 Step 4 Configure Media Resource Group for Non-V.150 Endpoints Use this procedure to add a new media resource group that includes MTP resources for non-V.150 endpoints. Procedure Step 1 From Cisco Unified Communications Manager Administration, choose Media Resources > Media Resource Group. Step 2 Click Add New. Step 3 In the Name field, enter the media resource group name as Do not use with V.150 devices. Step 4 From the Available Media Resources field, choose only MTP devices and click the down-arrow key. The selected devices appear in the Selected Media Resources field. Step 5 Click Save. Configure a Media Resource Group List for Non-V.150 Endpoints Configure Media Resource Group for Non-V.150 Endpoints, on page 257 Use this procedure to add new media resource group list with MTP resources for non-V.150 end points. Security Guide for Cisco Unified Communications Manager, Release 15 and SUs 257 Advanced System Security Configure Media Resource Group for Non-V.150 Endpoints