Cisco V.150 Minimum Essential Requirements (MER)

V.150 Overview

The V.150 Minimum Essential Requirements feature allows you to make secure calls in a modem over IP network. The feature uses a dial-up modem for large installed bases of modems and telephony devices operating on a traditional public switched telephone network (PSTN). The V.150.1 recommendation specifically defines how to relay data from modems and telephony devices on a PSTN into and out of an IP network through a modem. The V.150.1 is an ITU-T recommendation for using a modem over IP networks that support dial-up modem calls.

The Cisco V.150.1 Minimum Essential Requirements feature complies with the requirements of the National Security Agency (NSA) SCIP-216 Minimum Essential Requirements (MER) for V.150.1 recommendation. The SCIP-216 recommendation has simplified the existing V.150.1 requirements.

Cisco V.150.1 MER feature supports the following interfaces:

  • Media Gateway Control Protocol(MGCP) T1(PRI and CAS) and E1(PRI) trunks

  • Session Initiation Protocol (SIP) trunks

  • Skinny Client Control Protocol (SCCP) for analog gateway endpoints

  • Secure Communication Interoperability Protocol-End Instruments (SCIP-EI)

Prerequisites for Cisco V.150.1 MER

Your system should already be set up with basic call control functionality. For instructions on how to set up the call control system, refer to theSystem Configuration Guide for Cisco Unified Communications Manager.

For Unified Communications Manager, you must have one of the following releases installed:

  • The minimum version is Release 10.5(2) SU3

  • For 11.0, the minimum version will be 11.0(1) SU2 available in Spring 2016

  • All releases from 11.5(1) on support this feature

  • 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.

Configure V.150 Task Flow

Complete these tasks to add V.150 support in Unified Communications Manager.

Procedure

  Command or Action Purpose

Step 1

To Configure Media Resource Group Task Flow, perform the following subtasks:

Add Media Resource Group and Media Resource Group List for V.150 and non V.150 devices.

Step 2

Configure the Gateway for Cisco V.150 (MER)

Add V.150 functionality to a gateway.

Step 3

Configure V.150 MGCP Gateway Port Interface

If you want to use V.150 support across an MGCP gateway, add V.150 support to the port interface.

Step 4

Configure V.150 SCCP Gateway Port Interface

If you want to use V.150 support across an SCCP gateway, add V.150 support to the port interface.

Step 5

Configure V.150 Support for Phone

Add V.150 support to the phones that will be placing V.150 calls.

Step 6

To Configure SIP Trunk Task Flow, perform one or any of the following subtasks:

Add V.150 support to the SIP trunk that will be used for V.150 calls.

Step 7

To use the V.150 MER feature, you also need to configure IOS on your gateway to support the feature.

For more information on IOS gateway configuration settings, see http://www.cisco.com/c/en/us/td/docs/ios/12_4t/12_4t4/mer_cg_15_1_4M.html.

Configure Media Resource Group Task Flow

Your system should already be set up with basic call control functionality. For instructions on how to set up the call control system, see System Configuration Guide for Cisco Unified Communications Manager.

For Unified Communications Manager, you must have one of the following releases installed:

  • The minimum version is Release 10.5(2) SU3

  • For 11.0, the minimum version will be 11.0(1) SU2

  • All releases from 11.5(1) on support this feature

  • 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

  Command or Action Purpose

Step 1

Configure Media Resource Group for Non-V.150 Endpoints

You can configure the Media Resource Group with MTP for non-V.150 endpoints.

Step 2

Configure a Media Resource Group List for Non-V.150 Endpoints

Configure a Media Resource Group list that includes your MTP Media Resources for non-V.150 endpoints.

Step 3

Configure Media Resource Group for V.150 Endpoints

Configure Media Resource Group without MTP resources for secure V.150 calls.

Step 4

Configure a Media Resource Group List for V.150 Endpoints

Configure a Media Resource Group list without MTP after adding the required resources in the Media Resource Group for secure V.150 endpoints.

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

Use this procedure to add new media resource group list with MTP resources for non-V.150 end points.

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose Media Resources > Media Resource Group List.

Step 2

Click Add New.

Step 3

In the Name field, enter a name for the media resource group list as Non- V.150.

Step 4

From the Available Media Resources field, choose the V.150 MER resource group named Do not use with V.150 Devices and click the down-arrow key.

The selected devices appear in the Selected Media Resources field.

Step 5

Click Save.

Configure Media Resource Group for V.150 Endpoints

Use this procedure to add new media resource group without MTP resources for V.150 devices.

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 For use with V.150 devices.

Step 4

From the Available Media Resources field, choose multiple devices except the MTP resources 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 V.150 Endpoints

Configure Media Resource Group for V.150 Endpoints

Use this procedure to add a media resource group list without MTP resources for V.150 devices.

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose Media Resources > Media Resource Group List.

Step 2

Click Add New.

Step 3

In the Name field, enter a name for the media resource group list as V.150.

Step 4

From the Available Media Resources field, choose the V.150 MER resource group named For V.150 Devices and click the down-arrow key.

The selected media resource groups appear in the Selected Media Resources field.

Step 5

Click Save.

Configure the Gateway for Cisco V.150 (MER)

Use this procedure to configure the gateway for Cisco V.150 (MER).

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose Device > Gateway.

Step 2

Click Add New.

Step 3

Choose the gateway from the Gateway Type drop-down list.

Step 4

Click Next.

Step 5

From the Protocol drop-down list, choose a protocol.

Step 6

Depending on which Protocol you chose for the gateway, perform:

  • For MGCP, in the Domain Name field, enter the domain name that is configured on the gateway.
  • For SCCP, in the MAC Address (Last 10 Characters) field, enter the gateway MAC address.

Step 7

From the Unified Communications Manager Group drop-down list, choose Default.

Step 8

In the Configured Slots, VICs and Endpoints area, perform the following steps:

  1. From each Module drop-down list, select the slot that corresponds to the Network Interface Module hardware that is installed on the gateway.

  2. From each Subunit drop-down list, select the VIC that is installed on the gateway.

  3. Click Save.

    The port icons appear. Each port icon corresponds to an available port interface on the gateway. You can configure any port interface by clicking the corresponding port icon.

Step 9

Complete the remaining fields in the Gateway Configuration window. See the online help for more information about the fields and their configuration options.

Step 10

Click Save.

Configure V.150 MGCP Gateway Port Interface

Use this procedure to configure V.150 MGCP gateway port interface.

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose Device > Gateway.

Step 2

Enter the appropriate search criteria to modify the settings for an existing gateway and click Find.

Step 3

In the Configured Slots, VICs, and Endpoints area, locate the module and subunit on which you want to configure a port for V.150 MER and click the corresponding port icon.

Step 4

From the Device Protocol drop-down list, choose Digital Access T1 or Digital Access PRI and click Next.

Note

 

The Device Protocol drop-down list is displayed only if T1 port is selected in the Configured Slots, VICs, and Endpoints area.

The Gateway Configuration window now displays the port interface configuration.

Step 5

Select the Media Resource Group List named V.150.

Step 6

Check the V150 (subset) check box.

Step 7

Configure the remaining fields, if applicable. See the online help for more information about the fields and their configuration options.

Step 8

Click Save.

Step 9

(Optional) If you want to configure additional port interfaces for the gateway, from the Related Links drop-down list, choose Back to MGCP Configuration and click Go. You can select a different port interface.

Configure V.150 SCCP Gateway Port Interface

Use this procedure to configure V.150 SCCP gateway port interface.

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose Device > Gateway.

Step 2

Enter the appropriate search criteria to modify the settings for an existing SCCP gateway and click Find.

Step 3

In the Configured Slots, VICs, and Endpoints area, locate the module and subunit on which you want to configure a port for V.150 MER and click the corresponding port icon.

Step 4

Select the Media Resource Group List named "V.150".

Step 5

In the Product Specific Configuration Layout area, if the Latent Capability Registration Setting drop-down list appears, select Modem Relay or Modem Relay and Passthrough.

Step 6

Configure the remaining fields, if applicable. See the online help for more information about the fields and their configuration options.

Step 7

Click Save.

Configure V.150 Support for Phone

Use this procedure to add V.150 support for a phone. The following phone types support V.150:

  • Cisco 7962—Third party SCCP end point registered as Cisco 7962

  • Cisco 7961G-GE—Third party SCCP end point registered as Cisco 7961G-GE

  • Third Party AS-SIP Endpoints

Procedure

Step 1

Create an End User with the User ID same as the intended phone number.

Step 2

Configure the Digest Credentials field in the End User Configuration window for Third Party AS-SIP SIP endpoints.

For more information on how to configure a new End User, see the "Provision End Users Manually" chapter in the System Configuration Guide for Cisco Unified Communications Manager

Step 3

From Cisco Unified Communications Manager Administration, choose Device > Phone.

Step 4

Perform either of the following steps:

  • To configure V.150 on an existing phone, click Find and select the phone.

  • To configure a new phone for V.150, click Add New.

Step 5

From the Phone Type drop-down list, select one of the phone types that supports V.150, and click Next.

Step 6

For third party SCCP endpoints registered as Cisco 7962, select SCCP from the Device Protocol drop-down list, and click Next.

Step 7

From the Media Resource Group List drop-down menu, select V.150.

Step 8

For third party AS-SIP SIP endpoints only, Configure the following fields:

  • From the Digest User drop-down select the end user for this phone. The end user will be used for digest authentication.

  • Leave the Media Termination Point Required check box unchecked.

  • Check the Early Offer support for voice and video calls check box.

Step 9

Click Save.

Step 10

Click Apply Config.

Step 11

Click OK.

Configure SIP Trunk Task Flow

Use this procedure to configure SIP Trunk task flow.

Procedure

  Command or Action Purpose

Step 1

Configure SIP Profile for V.150

Configure a SIP Profile with SIP Best Effort Early Offer support for the SIP trunk.

Step 2

Set the Clusterwide V.150 Filter

Optional. Configure a clusterwide default setting for SIP V.150 SDP Offer Filtering.

Step 3

Add V.150 Filter to SIP Trunk Security Profile

Configure a V.150 Filter within a SIP Trunk Security Profile that you can assign to specific SIP trunks.

Step 4

Configure SIP Trunk for V.150

Configure V.150 support for the SIP trunks that will handle V.150 calls.

Configure SIP Profile for V.150

Use this procedure to configure a SIP Profile with SIP Best Effort Early Offer support for the SIP trunk.

Procedure

Step 1

In Cisco Unified Communications Manager Administration, choose Device > Device Settings > SIP Profile .

Step 2

Perform either of the following steps:

  • To create a new profile, click Add New.
  • To select an existing profile, click Find and select a SIP profile.

Step 3

In the Name field, enter the SIP name for V.150.

Step 4

In the Description field, enter the description for V.150.

Step 5

From the Early Offer Support for Voice and video class drop-down list, choose Select Best Effort (no MTP inserted).

Step 6

Enter any other configuration settings that you want. See the online help for more information about the fields and their configuration options.

Step 7

Click Save.

Set the Clusterwide V.150 Filter

Use this procedure to configure a clusterwide default setting for SIP V.150 SDP Offer filtering.


Note

If you configure a SIP V.150 SDP Offer Filtering value within a SIP Trunk Security Profile that is different than the clusterwide service parameter setting, the security profile setting overrides the cluster-wide service parameter setting for the trunks that use that security profile.

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose System > Service Parameters.

Step 2

From the Server drop-down list, choose an active server.

Step 3

From the Service drop-down list, choose Cisco CallManager.

Step 4

In the Clusterwide Parameters ( Device- SIP) section, configure a value for the SIP V.150 SDP Offer Filtering service parameter.

Step 5

Choose SIP V.150 SDP Offer Filtering from the drop-down list.

Step 6

Specify the desired filtering action.

Step 7

Click Save.

Add V.150 Filter to SIP Trunk Security Profile

Use this procedure to assign a V.150 Filter within a SIP Trunk Security Profile.


Note

If you configure a SIP V.150 SDP Offer Filtering value within a SIP Trunk Security Profile that is different than the clusterwide service parameter, the security profile setting overrides the cluster-wide service parameter setting for the trunks that use that security profile.

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose System > Security > SIP Trunk Security Profile.

Step 2

Perform one of the following tasks:

  • Enter search criteria and Click Find to choose an existing profile from the list to modify the settings for an existing SIP Trunk Security Profile.
  • Click Add New to add a new SIP Trunk Security Profile.

Step 3

Configure a value for the SIP V.150 Outbound SDP Offer Filtering drop-down list.

Note

 

The default setting is to use the value of the SIP V.150 Outbound SDP Offer Filtering cluster-wide service parameter.

Step 4

Configure any remaining fields in the SIP Trunk Security Profile Configuration window. See the online help for more information about the fields and their configuration options.

Step 5

Click Save.

Configure SIP Trunk for V.150

Use this procedure to configure settings for a SIP trunk.

Procedure

Step 1

From Cisco Unified Communications Manager Administration, choose Device > Trunk.

Step 2

Perform either of the following steps:

  • To create a new profile, click Add New.
  • Click Find and select a SIP trunk, to select an existing trunk.

Step 3

For new trunks, do the following:

  • From the Trunk Type drop-down list, choose SIP Trunk.
  • From the Protocol Type drop-down list, choose SIP.
  • From the Trunk Service Type drop-down list, choose None(Default).
  • Click Next.

Step 4

Enter the SIP trunk name in the Name field.

Step 5

Enter the SIP trunk description in the Description field.

Step 6

From the Media Resource Group List drop-down list, choose the Media resource group list named "V.150".

Step 7

Configure the destination address for the SIP trunk:

  1. In the Destination Address text box, enter an IPv4 address, fully qualified domain name, or DNS SRV record for the server or endpoint that you want to connect to the trunk.

  2. If the destination is a DNS SRV record, check the Destination Address is an SRV check box.

  3. To add additional destinations, click (+) button. You can add up to 16 destinations for a SIP trunk.

Step 8

From the SIP Trunk Security Profile drop-down list, assign the SIP trunk security profile that you configured for this trunk.

Step 9

From the SIP Profile drop-down list, assign the SIP profile that you set up with the Best Effort Early Offer setting.

Step 10

Leave the Media Termination Point Required check box unchecked.

Step 11

Configure any additional fields in the Trunk Configuration window. See the online help for more information about the fields and their configuration options.

Step 12

Click Save.