Mitel MiVOICE BUSINESS, Engineering Manualline

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Typical Configurations
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USE OF SRTP
SRTP allows voice encryption between Mitel and supported third party devices. It requires
additional resource above Mitel encryption and therefore is only supported on the following
platforms and with the limitation described below:
• MXe III expanded (Note: Maximum E2T channels is reduced from 192 to 150 in gateway
configuration)
• MXe III base
• CX II
• AX
• MiVoice Business for ISS
• MiVoice Business Multi-instance
• MiVoice Business Virtual
Mitel proprietary voice encryption is supported in ACD deployments. However, due to the
increased load SRTP places on the solution SRTP voice encryption is not supported in ACD
configurations and must be disabled via ESM.
PAGING AND BACKGROUND MUSIC LIMITATIONS
Using the speaker on IP phones for either group paging or playing of background music can
require significant resource usage on the controller. In the 3300 ICP controllers (including the
MXe Server) one channel of the E2T function is used for every device either receiving a page
or listening to a music source (whether that source is analogue, digital, or embedded). Although
only a single echo canceller is used in either case, the heavy use of E2T channels could cause
blocking on trunk calls or other features. Similar limitations exist in the media server with
MiVoice Business on industry standard servers (MiVoice Business for ISS, MiVoice Business
Multi-instance, and MiVoice Business Virtual).
The following table shows recommended maximum values for the various platforms, although
these limits can be exceeded on systems with lower than normal traffic (e.g. hospitality), up to
the number of available E2T channels. Be aware that paging to a large number of users takes
time to set up all of the voice connections, especially under heavy system traffic, and the first
words spoken may not be heard by some recipients.
Table 15: Music and Paging Limits
CONTROLLER TYPE MUSIC OR PAGING LIMIT
CX/CXi or CX/CXi II 16
AX, MXe base 32
MXe expanded, LX, and MXe Server 64
MiVoice Business for ISS, MiVoice Business
Multi-instance, MiVoice Business Virtual 100