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Configure media termination points

Media termination point (MTP) resources must be available for BlackBerry Mobile Voice System calls to handle any DTMF capabilities mismatch. As examples, MTPs are required if it is necessary to force early offer, or if you are supporting Voice over Wi-Fi for BlackBerry MVS users. Typically, mismatch occurs when RFC2833 and out-of-band DTMF relay are not supported by all points in the call path.

Cisco Unified Communications Manager handles the assignment of MTPs automatically and dynamically assigned MTP resources as needed. This means that you can configure MTPs without a detailed understanding of their usage.

If your organization already has Cisco ISR-hosted media resources, you do not need to configure additional MTPs. If not, use hardware DSP-based resources (PVDM2 or PVDM3 modules) running on a Cisco ISR 28XX/38XX or ISR G2 29XX/39XX router when these resources are available. If hardware DSP resources are not available, you can configure the CPU of a Cisco ISR router to support MTP sessions if the router is not used for other processor-intensive services (such as encryption or VPN). MTP resources provided by the Cisco Unified Communications Manager are not recommended as they can introduce unacceptable audio latency into BlackBerry MVS calls.

With MGCP gateways you can use Cisco Unified Communications Manager based MTPs.

With H.323 and SIP gateways, you must use router based MTPs.

In a centralized call-processing deployment model, distribute the media resources so as to keep the audio (typically, by RTP delivery) local to the remote site as much as possible.

Field

Suggested setting

Setting for your organization's PBX

Media Termination Point Type

This field specifies the type of MTP.

Select: Cisco IOS Enhanced Software Media Termination Point

 

Media Termination Point Name

Type the name of the MTP resource as configured in the IOS configuration of the Cisco ISR router (for example, MRG_MVS<#>_<SITEx>).

Device Pool

This field specifies the device pool that contains settings that are assigned to the MTP resource.

Make note of the IP addresses of the Cisco Unified Communications Manager nodes that are in the Cisco Unified CM Group that is configured for the chosen device pool; you require the IP addresses for the IOS configuration of the Cisco ISR router.

Configure a media resource group

Media resource management includes working with media resource groups and media resource group lists. Media resource management provides a way to manage media resources so that all Cisco Unified Communications Manager instances within a cluster can share the resources.

If your organization already has a media resource group that contains Cisco ISR-hosted media resources, you do not need to configure an additional media resource group.

In a single server deployment model, a default media resource group and a default media resource group list are created during installation. All media resources are assigned to the media resource group automatically, and this media resource group is assigned to the media resource group list.

In a centralized call-processing deployment model, distribute the media resources so as to keep the audio (typically, by RTP delivery) local to the remote site as much as possible.

Field

Suggested setting

Setting for your organization's PBX

Name

This field specifies a name for the media resource group (for example, MRG_MVS).

Selected Media Resources

This field specifies the media resources that are in the media resource group that will be available to the BlackBerry MVS Client and the SIP trunk to the BlackBerry MVS Server.

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Configure a media resource group list

Media resource management comprises working with media resource groups and media resource group lists. Media resource management provides a mechanism for managing media resources, so all Cisco Unified Communications Manager instances within a cluster can share them.

If your organization already has a media resource group list that contains Cisco ISR-hosted media resources, you do not need to configure an additional media resource group list.

Field

Suggested setting

Setting for your organization's PBX

Name

This field specifies a name for the media resource group list (for example, MRGL_MVS).

Selected Media Resource Groups

This field specifies the media resource groups you are making available for BlackBerry Mobile Voice System requirements.

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