Maximum Directory Numbers in a Line Group

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Jan 9th, 2008
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What is the maximum number of directory numbers recommended in a single line group configured for longest idle.



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hadbou Wed, 01/16/2008 - 09:21
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The limit is 1,500 Hunt/Route Lists, each contains 10 devices/gateways. Also, if you have lesser Route lists, may be you can increase the number of devices.

micpopov Tue, 02/26/2008 - 13:36
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So is the system maximum 15,000 DN's and you can use any combination of number of lists/DN's not to exceed 15,000?

Is this across all hardware platforms or the 7845 and it decreases from there?

Jaime Valencia Tue, 02/26/2008 - 20:17
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Hunt Pilot Scalability

Cisco recommends using the following guidelines when deploying call coverage using top-down, circular, and longest-idle algorithms:

•The Unified CM cluster supports a maximum of 15,000 hunt list devices.

•The hunt list devices may be a combination of 1500 hunt lists with 10 IP phones in each hunt list, or a combination of 750 hunt lists with 20 IP phones in each hunt list. However, an increase in a number of hunt lists can require increasing the dial plan initialization timer specified in the Unified CM service parameters. Cisco recommends setting the dial plan initialization timer to 600 seconds if 1500 hunt lists are configured.



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