Configuring Cisco Unified Communications Manager
To enable teleconferencing on Cisco Webex Meetings Server you must configure one (or more) Cisco Unified Communications Manager (CUCM) system to manage call control. Optionally you can configure a second CUCM system for audio high availability.
CUCM in an MDC Environment
The CUCM configurations in a Multi-data Center (MDC) environment are the same as in a Single-data Center (SDC) environment. Configuration parameters modified on one data center are automatically matched on the other data center.
On CUCM, the basic configurations in a Multi-data Center (MDC) environment are the same as in a Single-data Center (SDC) environment. However, you must configure trunks to all data centers. Each data center can have a different route pattern. If you want to use more than one CUCM, each data center must have a SIP trunk to the CUCM in the other data centers for calls to transfer.
Before You Begin
Obtain your Load Balancer Point and Application Point information from your Cisco Webex Meetings Server Audio page. Load balancer points manage call load balancing and application points manage calls, conference flow, and feature control. Systems of different sizes have different numbers of load balancer points and application points and the numbers are not customized. Sign into your Administration site and select to see this information.
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Size (50/250/800/2000)
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High availability
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Transport type
On the Audio page, there is a SIP Configuration Table that displays load balancer point and application point information including IP addresses and ports. This table is also displayed on the Configuring Your Audio Settings for the First Time page that appears the first time you configure your audio settings.
To make CUCM work with Cisco Webex Meetings Server, CUCM requires the following base and specific configurations:
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Base configuration
Note
These configurations can be shared with multiple Cisco Webex Meetings Server systems.
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SIP trunk security profile
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SIP profile
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Specific configuration
Note
These configurations must be made for individual Cisco Webex Meetings Server systems and cannot be shared by multiple systems.
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Certificate management
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SIP trunk
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Route group
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Route list
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Route pattern
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SIP route pattern
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CUCM Secure Teleconferencing in an MDC Environment
It is not possible to import certificates from all data centers in a Multi-data Center (MDC) into a single Cisco Unified Call Manager (CUCM) as needed to secure teleconferencing when the common name of both certificates is the same.
By default, the common name for all data centers is the global site URL of the system. However, to make the common name unique, you can generate certificates. For more information, see Generating a Certificate Signing Request (CSR). Select the local site URL instead of the global site URL to use in the common name.
Self-signed certificates generated during any system altering procedure (such as changing the site or administration URL, changing hostnames) results in a certificate that has the global site URL in the common name, so you must manually create certificates with the local site URL after this type of operation.
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