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Cisco IP Telephony Solution Reference Network Design
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Chapter 6 Call Processing
Dial Plan Weights
For the latest information on supported platforms and specific hardware configurations, refer to the
online documentation at
Dial Plan Weights
Cisco CallManager uses device weights to control the number of physical devices that may register with
any subscriber server. The BHCA multiplier adjusts the device weight of devices that have a higher
impact on a subscriber as they make or receive more calls in the busy hour.
Dial plan weights control the number of dial plan parameters that you can configure on a
Cisco CallManager server. Subscriber dial plan weights relate to individual device configuration
parameters (specifically, line appearances), and global dial plan weights relate to global configuration
parameters (such as route patterns and translations patterns) that are not associated with a particular
device.
Cisco MCS-7822
Pentium III (550MHz), 512MB RAM
500
1000
No
No
Cisco MCS-7820
Pentium III (500MHz), 512MB RAM
500
1000
No
No
Cisco SPE 310 (ICS 7750)
Pentium III (700MHz), 512MB RAM
1000
2000
No
No
Hewlett-Packard/Compaq DL380
All Cisco approved models
2500
5000
Yes
No
Hewlett-Packard/Compaq DL320
All Cisco approved models
1000
2000
No
No
IBM xSeries 34x
All Cisco approved models
2500
5000
Yes
No
IBM xSeries 33x
All Cisco approved models
1000
2000
No
No
Cisco MCS-7815
Celeron (1GHz), 512MB RAM
200
400
No
No
1.
A platform that is not a high availability server can support a maximum of 500 IP phones in a non-redundant installation.
2.
A high availability server supports redundancy for both the power supplies and the hard disks.
Table 6-4
Maximum Number of Devices per Server Platform (continued)
Server Platform Characteristics
Maximum IP
Phones per Server
1
Maximum Device
Weight Units per
Server
High Availability
Platform
2
High Performance
Server