Nortel Networks NN43001-121 - Manual (Page 49)

Capacity planning 49
Figure 16
SIP CTI (TR/87) example
Mediation server requirements
The CS 1000 can process up to 13 000 simultaneous calls. Therefore, you
may require several Mediation servers for one CS 1000. To correctly deploy
OCS 2007 to interwork with the CS 1000, you must correctly engineer the
network to handle the anticipated call traffic. Calculate the anticipated call
traffic for the CS 1000 using the instructions in Communication Server
1000E Planning and Engineering (NN43041-220). For more information
on hardware requirements, see
Table 7 "Mediation Server hardware
requirements" (page 53) .
Signaling Server requirements
The maximum number of SIP CTI (TR/87) users on a single Signaling Server
is 5000. One Signaling server can support up to 1800 SIP trunks; therefore,
you require up to two Mediation servers for a single Signaling Server. To
increase the system capacity, associate a pool of Mediation Servers with
each Call Server. MCM routes inbound calls from the Signaling Server to
the appropriate Mediation Server within the Mediation Server pool.
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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