[cisco-voip] Hunt Group Limits

[STEVEN CASPER]

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

• The Cisco Unified CallManager 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 Cisco CallManager service parameters. Cisco recommends
setting the dial plan initialization timer to 600 seconds if 1500 hunt
lists are configured.
Note When using the broadcast algorithm for call coverage, the number
of hunt list devices is limited by the number of busy hour call attempts
(BHCA). Note that a BHCA of 10 on a hunt pilot pointing to a hunt list
or hunt group containing 10 phones and using the broadcast algorithm is
equivalent to 10 phones with a BHCA of 10.

• Cisco recommends having a maximum of 35 directory numbers in a single
line group configured to send the calls simultaneously to all DNs.
Additionally, the number of broadcast line groups depends on the BHCC.
If there are multiple broadcast line groups in a Cisco Unified
CallManager system, the number of maximum directory numbers in a line
group must be less than 35. The number of busy hour call attempts (BHCA)
for all the broadcast line groups should not exceed 35 calls set up per
second.
 
 
>>> "STEVEN CASPER" <SCASPER at mtb.com> 2/5/2008 1:40 PM >>>
 We are upgrading to CCM 4.2.3 next month ( like to go to 6.1 but we
are still wrestling with compatibility issues such as what to do about
IPCC-X, TAPS and backups) and there is a lot of interest in Hunt Groups
now that users can log into and out of them. Are there any limitations
on how many you can have in a cluster and the number of members in each
group?
 
Thanks!
Steve

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