Specifications

Engineering Guidelines
46
Summary of Device and User Limits
The numbers in the following table indicate the number of IP, SIP, and analog devices that can
be licensed and active on the various systems.
• The total number of active IP sets includes all device types (52xx, 53xx, and 55xx) and all
applications that use emulated IP sets as their interface to the system. For example, a
60-port external IP Voice Mail system registers with the controller as 60 basic IP sets.
• Additional IP users (Hot Desk) or SIP sets can be licensed beyond the number of active
devices, but only the numbers shown in this table will be able to register with the controller
and become active.
• Analog extensions in the ASU II, the SX200 Bay, and in the AX controller must be licensed,
and count against the limit of Total Devices. Analog extensions in the embedded analog
boards and the 192 port Peripheral Cabinet (and the Extended Peripheral) are not part of
the Total Device limits, but they still have separate limits. The CX and AX do not support
the Peripheral Cabinets.
• The actual limits on licensed analog extensions and analog trunks are determined by the
number of cards that can be installed in ASU II cabinets connected to the controller.
• "Total Devices" refers to licensed ONS and IP devices only. The number does not include
TDM devices that are installed in peripheral cabinets.
• A Hot Desk user logged in to any standard IP phone does not change the total limit of active
devices, but counts as an additional device when logged into a 53xx type set. This limit is
only significant in the CX/CXi, but can be overcome by upgrading to 512M of memory.
For all of the cases shown, it may be possible to purchase licenses for more users or devices
than are nominally supported on a given controller, based on an option package. The fact that
the licenses have been supplied for a system does not guarantee that the system will work to
full capacity with all devices and users registered (active). Always check system performance
with the System Engineering Tool before installing a system in which multiple limits are
approached.
MXe expanded, LX, and MXe Server 64
MiVoice Business for ISS, MiVoice Business
Multi-instance, Virtual MiVoice Business
100
Note: In the CX/CXi and AX systems the number of available echo cancellers might be
less than the numbers shown here, depending on the specific combination of modules
installed. In the commercial servers the actual maximum will be dependent on the CPU
availability and/or allocation for the Media Server.
Table 16: Music and Paging Limits
Controller Type Music or Paging Limit