Specifications

Phones and Voice Applications

System Resource Notes

1. The MiCollab Client and MiContact Center Office servers can place a monitor for every

device on the system, including TDM devices and trunks. Note that SAC sets will have an

additional monitor related to the phone device.

2. The total number of MiTAI monitors and HCI sockets available in the system is limited, and

since several different applications may be using these monitors, it is easy to exceed the

maximum allowable. This maximum number should be looked at carefully for all large

systems but especially if resilient sets are involved. Keep in mind that if multiple applications

put monitors on one set, then there is only one monitor applied for the set, and that can

reduce the impact on the system somewhat. However, multiple applications and common

monitors does not reduce the number of required HCI sockets.

3. The 5230, 5235, 5240, 53xx, and Navigator sets use a second IP socket for Switch Appli-

cations Communications (SAC). This connection provides the key updates and application

connection for these phones and is independent from the call control connection via MiNET.

The SAC component connects to MiTAI via a single socket and effectively acts as an internal

application server. This IP connection doubles the number of IP sockets used by these

sets, and may restrict the total number of these sets per system in order to allow enough

sockets for other sets and applications.

Worked Example

The following is a worked example to calculate the number of sockets and monitors that will

be needed for an installation that consists of a resilient system with fixed and hot-desk users

plus a mix of both MiCollab Client and also UC Express on a number of end devices.

The following picture highlights the configuration. The main site is shown pictorially and it is

assumed that the backup is a copy from another controller.

Table 31: Application Socket Limits for Release MCD 5.0 and Later

Resource AX, CX, MX, MXe base MXe expanded

MXe Server, MiVoice

Business for ISS, Virtual

MiVoice Business (all),

MiVoice Business

Multi-instance (x86

CPU)

MiNET Sockets 700 1400 5600

SAC Sockets 700 1000 3000

MiTAI Sockets 400 400 400

Total IP Sockets (see

Note)

4096 4096 16384

MiTAI Monitors 2000 2000 5600

Note: The values shown represent the maximum number of available file descriptors. Descriptors are shared by

files and IP sockets. Thus, the maximum number of sockets is actually lower.