Nortel Networks NN43001-121 manual General requirements navigation

General requirements 51

The number of users the OCS Proxy server with MCM can handle depends on the usage and the number of calls per hour per user. For example, assuming 5 cph/user for VoIP calls would give 3000 users (15 000 cph/5 cph/user = 3000 users).

The following are the formulas (based on SPECint_rate2000) to calculate the maximum call rate for different platforms:

•VoIP calls only. Number of calls per hour supported = (15 000 x SPECint of HW) / 29.8.

•SIP CTI (TR/87) RCC calls only. Number of calls per hour supported = (10000 x SPECint of HW) / 29.8.

•Both VoIP and SIP CTI (TR/87) RCC calls combined. Number of calls per hour supported = [(15 000 x SPECint of HW) x (VoIP_call%) + (10 000 x SPECint of HW) x (SIPCTI_call%)]/ 29.8.

ATTENTION

VoIP_call% or SIPCTI_call% must be less then 100%.

ATTENTION

An OCS Proxy is not an Access Proxy. For more information on OCS proxy hardware requirements, see Table 8 "OCS Proxy server hardware requirements" (page 53).

General requirements

This section provides general guidelines and requirements to follow when you deploy the Office Communications Server 2007.

General requirements navigation

•"Server topology" (page 52)

•"Operating System Requirements" (page 52)

•"Hardware Requirements" (page 53)

•"Virtual Server 2005" (page 54)

•"Storage" (page 55)

•"Trunks" (page 55)

•"SIP access port " (page 55)

•"Basic Client Configuration" (page 58)

•"Port use" (page 58)

•"Security " (page 59)

Nortel Communication Server 1000

Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007

NN43001-121 01.03 Standard

Release 5.0 30 April 2008

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