Configure and Register IOS-Based Media Termination Points for Hybrid Call Service Connect

Document created by Cisco Documentation Team on Jun 3, 2016Last modified by Cisco Documentation Team on Jul 19, 2017
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Configure an IOS Media Termination Point for Hybrid Call Service Connect

 

Out-of-Band (OOB) DTMF is required for DTMF interoperability with Cisco Spark CTI remote devices. If any devices registered to your call control environment do not support OOB, then Unified Communications Manager inserts a software MTP.

  

To ensure that both audio and video is passed through properly on a call involving TC/CE-based endpoints, you must use an IOS-based MTP with passthrough configured.

  
Before You Begin 
  •  

    The information in this procedure is intended as a generic example for IOS configuration. Your configuration requirements may vary and depend on the IOS version on your MTPs and your call control environment. For further guidance, see the configuration guides for specific IOS versions.

      

  •  

    To avoid packet loss, you must use an MTP that supports Real Time Control Transport Protocol (RTCP). See Audio and Video RTCP Passthrough on ISR Gateways for MTP, TRP & RSVP Agents for guidance.

      

      
1    Establish the connection and priority level between the MTP and Unified Communications Manager.

Example: 

sccp local GigabitEthernet0/0

  

sccp ccm 10.10.10.1 identifier 1 priority 1 version 7.0 (10.10.10.1 is the primary call processing node and has the highest priority of 1.)

  

sccp ccm 10.10.10.2 identifier 2 priority 2 version 7.0 (10.10.10.2 is the secondary call processing node and has a lower priority of 2.)

  

sccp

  

!

  
2    Create a Unified Communications Manager group, associate the nodes with the group, and establish priority within the group.

Example:

sccp ccm group 1

associate ccm 1 priority 1

associate ccm 2 priority 2

3    Choose one of the example configurations to create the DSP farm and codec passthrough:
  • For a hardware MTP:

    associate profile 1 register {MTP name registered with CUCM} (This name should match the name of the MTP that you want to configure on Unified Communications Manager.)

    !

    !

    dspfarm profile 1 mtp

    description passthru mtp for call service connect

    codec g711ulaw

    codec pass-through

    maximum sessions hardware 4 (As a minimum.)

    associate application SCCP

  • For a software MTP:

    associate profile 1 register {MTP name registered with CUCM} (This name should match the name of the MTP that you want to configure on Unified Communications Manager.)

    !

    !

    dspfarm profile 1 mtp

    description passthru mtp for call service connect

    codec g711ulaw

    codec pass-through

    maximum sessions software 4 (As a minimum.)

    associate application SCCP

Configure Media Termination Point Settings in Unified Communications Manager

After you configure the MTP through the IOS commands, you must register it to your Unified Communications Manager and link the MTP as a media resource to the TC/CE software-based endpoints that fail to deliver video during a call between Call Service Connect users.
       
1    Under Media Resources > Media Termination Point, add a new Cisco IOS Enhanced Software Media Termination Point and enter the exact name of the IOS MTP that you configured.
2    Under Media Resources > Media Resource Group, create a new group and move the IOS MTP to the Selected Media Resources field.
3    Under Media Resources > Media Resource Group List, create a new list and move the media resource group to the Selected Media Resource Groups field.
Note      

If any MTPs in your Unified CM cluster aren't allocated to a Media Resource Group List, then the MTP allocation may not function as expected. See this document for more information.

4    Perform one of the following steps:
  • Associate the media resource group list with the device pool that contains any TC/CE endpoints that may be used for video in your call environment.
  • Associate the media resource group list directly with any TC/CE endpoints that may be used for video in your call environment.

Check the Registration and Connection Status of the Media Termination Point

At any point after you completed the registration steps, use IOS commands to check the status.

Run any of the following commands from an IOS MTP:
  • show dspfarm profile 1 to list the usage of resources that is associated with the profile.
  • show sccp to view the registration status from IOS.
  • show sccp connections to verify whether calls are correctly passing through.
  • show voip rtp connections to verify whether audio and video data over the real-time transport protocol (RTP) is passing through.
 

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