Mitel MIVOICE OFFICE 250 Manual

MiVoice Office 250
ENGINEERING GUIDELINES
RELEASE 6.2

NOTICE
The information contained in this document is believed to be accurate in all respects but is not warranted
by Mitel Networks™ Corporation (MITEL®). The information is subject to change without notice and should
not be construed in any way as a commitment by Mitel or any of its affiliates or subsidiaries. Mitel and its
affiliates and subsidiaries assume no responsibility for any errors or omissions in this document. Revisions
of this document or new editions of it may be issued to incorporate such changes.
No part of this document can be reproduced or transmitted in any form or by any means - electronic or
mechanical - for any purpose without written permission from Mitel Networks Corporation.
For additional information and/or technical assistance in North America, certified technicians may contact:
Mitel Networks Corporation
Technical Support Department (USA)
1146 North Alma School Road
Mesa, AZ 85201
1-888-777-EASY (3279)
Trademarks
The trademarks, service marks, logos and graphics (collectively "Trademarks") appearing on Mitel's
Internet sites or in its publications are registered and unregistered trademarks of Mitel Networks
Corporation (MNC) or its subsidiaries (collectively "Mitel") or others. Use of the Trademarks is prohibited
without the express consent from Mitel. Please contact our legal department at [email protected] for
additionalinformation.Fora list ofthe worldwide Mitel Networks Corporation registered trademarks, please
refer to the website: http://www.mitel.com/trademarks.
MiVoice Office 250 Engineering Guidelines
Release 6.2
June 2016
®,™ Trademark of Mitel Networks Corporation
© Copyright 2016, Mitel Networks Corporation
All rights reserved

Table of Contents
iii
Chapter 1:
New Features
What’s New in this Release? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
MiVoice Office 250 Release 6.2 New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
system park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Import Audio Files for Audiotex Recording Enhancement . . . . . . . . . . . . . . . . . . . . . . . . . . .2
MiVoice 5624 Wireless Phone Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Discontinuation of support for CS platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Other Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
More Features in Release 6.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
MOH (Music on Hold) for parked destinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Group Pickup Enhancement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Other Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
MiVoice Office 250 v6.1 SP1 New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Engineering Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
multi-Node video support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SIP Phone Group – Password Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
MiVoice Office 250 Release 6.1 New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Product Re-branding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
New PS1 Hardware Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
MiVoice Office 250 Attendant Console Refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Digital Telephone Refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Virtualized PS1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Video Support for SIP to SIP Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
BT CLIP CLID Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SIP ACD Agent Login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
MiVoice Office 250 v6.0 SP2 New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
DTMF Decoding Payload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Propagation of Original Caller ID to P-Asserted Identity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Do not use Out-bound Username in REGISTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Support for new DDM16 and DEM16 circuit board revisions . . . . . . . . . . . . . . . . . . . . . . . . .8
MCD Interoperability Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Microsoft Lync Integration Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Support for New Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
UPS Monitoring Support Changes on 6.0 SP2 and later software . . . . . . . . . . . . . . . . . . . . .8
MiVoice Office 250 v6.0 SP1 New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Engineering Guidleines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Mid Call Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
MBG SIP Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Chapter 2:

MiVoice Office 250 Engineering Guidelines
iv
Engineering Guidelines
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
When to Add a Processor Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Oversubscription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
DSP Resource Costs and Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
System Calculator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
IP Phone Percentage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
High Priority vs. Shared . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
High Priority Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Shared Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Phones to Devices Percentage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
IP Phones to Shared Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
When to add a Processing Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
High Call Traffic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
All-Ring Hunt Group Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
All-Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Phones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
IP Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Hub Node in a Networked System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Voice Mail Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Enhanced Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Processing Server Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Using the System Calculator to Determine the need for a Processing Server . . . . . . . . . . . . .23
Call Load (calls per hour) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
OAI Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Heavy Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Light Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
CT Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
OAI Applications Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
UVM Coexisting with NuPoint UM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Determining the Correct Compact Flash-Type Card Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Basic vs. Advanced Ad Hoc Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table of Contents
v
Video Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Supported devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Peripheral Devices for MiVoice Conference/Video Phone . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
High Definition Multimedia Interface Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Ethernet Cameras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Codecs compatibility matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Bandwidth usage considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Video phone bandwidth limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Network configuration and bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Bandwidth requirements for MiVoice Conference/Video Phone . . . . . . . . . . . . . . . . . . . . . . . .35
General Information on IP Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Video Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Database Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
SIP clients configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Soft client camera settings to control bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
MiVoice Conference/Video Phone settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
MiVoice Border Gateway configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Teleworker Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Bandwidth requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Mid-Call Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Impacts to System Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
System Limitations and Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
System Calculator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
System Calculator Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
System Calculator Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
System Calculator Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
System Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Phones to Devices Percentage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
IP Phones to Shared Percentage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Digital HX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
IP Phone HX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
IP Trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
IP Phones/SIP Trunks HX w/ PEC-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Large number of IP Phones, Trunks and UVM ports HX w/ PEC-1 . . . . . . . . . . . . . . . . . . .50

MiVoice Office 250 Engineering Guidelines
vi
Digital HX w/ PS-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Digital and IP Phones HX w/ PS-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Fully-Loaded Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Exceeds All System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Chapter 1
NEW FEATURES

MiVoice Office 250 Engineering Guidelines
2
WHAT’S NEW IN THIS RELEASE?
This section briefly describes the new features, hardware, and enhancements available on the
MiVoice Office 250.
MIVOICE OFFICE 250 RELEASE 6.2 NEW FEATURES
SYSTEM PARK
System Park is a feature that allows calls to be parked by a phone, then either retrieved again
by that phone, or retrieved by another phone.
• The Park/Pickup key with the same destination may be configured on several phones.
• then any of these phones can park or retrieve calls from the same destination.
• Multiple calls may be parked on the same destination.
• If in a call, the call will be added to the queue of parked calls.
• If not in a call, the first parked call on this destination will be retrieved.
• Parked calls will recall the person who parked the call after a timeout
• Phantom destinations use the new Park Recall Timer (default 180s, range 30-600s)
• HuntGroupsuse theexistingHuntGroupRecallTimer (default 180s, range 1-65'535s)
• If a call is parked on a Park/Pickup key, the key will flash.
• except if the Hunt Group has the ‘Group Call Pick-up’ flag disabled.
• Additional Notes:
• PhoneswithoutaPark/Pickup key can usethefeatures'transfer'and'reversetransfer'
to park and retrieve calls from destinations like "Park Location 1". Therefore it is rec-
ommended to give simple numbers to such Phantom or Hunt Group destinations.
• Assigning a Park/Pickup key to a Hunt Group destination is an enhancement to the
existingGroup Pick-upfeature, allowingGroupPick-upusingasinglekeypress,whilst
also allowing for a visual indication.
IMPORT AUDIO FILES FOR AUDIOTEX RECORDING ENHANCEMENT
Audiotex Recordings are custom recordings used by the MiVoice Office 250 Unified Voice
Messaging (UVM) applications like the Auto Attendant (AA) and Call Routing Announcement
(CRA) features.
Until now, Audiotex recordings could only be recorded using a phone with access to the Voice
Mail System Administrator’s Mailbox. Each recording is associated with a recording number
and assigned to the application(s) in Database Programming.
From release 6.2, you can now import audio files and use them for Audiotex applications,
including Auto Attendant (AA) and Call Routing Announcement (CRA) features. This will
improve the quality and fidelity of the recordings and allow pre-recorded, professional
recordings for auto attendant greetings and announcements.

New Features
3
Recording requirements are as follows:
• At this time, only WAV files are supported.
• Recordings must be less than 5 minutes in length.
MIVOICE 5624 WIRELESS PHONE SUPPORT
The MiVoice 5624 Wireless Phone seamlessly blends the wireless needs of the user with a
wide range of critical applications like voice messaging and integrates with fixed legacy
applications within the organization.
The MiVoice 5624 Wireless Phone is Mitel’s first VoWiFi (Voice over Wi-Fi) handset operating
on 802.11n network; it supports the deployment of voice over a Wireless LAN (WLAN) without
degrading the performance of an existing .11n network capacity. A MiVoice 5624 Wireless
Phone-based solution delivers trouble-free WLAN vendor interoperability and scalability, as
well as the capacity to integrate and communicate with a comprehensive range of external
sources.
Notes:
• MiVoice 5624 Wireless Phone is already available outside North America.
• In North America the regulatory approval and introductionis in progress with MiVoice Busi-
ness and will then also be available for MiVoice Office 250
• MiVoice 5624 Wireless Phone is Mitel’s rebranding of the earlier certified Ascom i62 and
is technically the same. (Mitel SIP Center of Excellence specifications, 14-4940-00310).
DISCONTINUATION OF SUPPORT FOR CS PLATFORM
With Release 6.2, CS platform is not supported.
OTHER ENHANCEMENTS
• Security improvements for SSL connections (Webserver, SSH) used on the system.
• Open SSH 7.1
• OpenSSL 1.0.2a
• Web services are only accessible via TLS 1.2 encryption
MORE FEATURES IN RELEASE 6.2
MOH (Music on Hold) for parked destinations
To change from Ringback to MOH for Parked Calls, two configurations are needed:
1. Change the ‘Audio for Calls Ringing at this Device’, from Ringback to Music, at the Park
Phantom(s)
2. Change the ‘Audio for Transfer to Ring’ from ‘Ringback’, to ‘Use Next Device’s Audio
Source’, at the Trunk Group.”

MiVoice Office 250 Engineering Guidelines
4
Group Pickup Enhancement
Assigning a Park/Pickup key to a Hunt Group destination is an enhancement to the existing
Group Pick-up feature, allowing Group Pick-up using a single key press, whilst also allowing
for a visual indication.
Other Enhancements
MiVoice Office 250 Release 6.2 supports Exchange 2016.
MIVOICE OFFICE 250 V6.1 SP1 NEW FEATURES
ENGINEERING GUIDELINES
The Engineering Guidelines (this document) is now a stand-alone document. It was previously
contained as an appendix in the MiVoice Office 250 Installation Manual.
MULTI-NODE VIDEO SUPPORT
MiVoice Office 250 Release 6.1 SP1 supports video calls between SIP clients connected to
different nodes. A SIP device connected to Node 1 can now make a video call to a SIP device
connected to Node 2.This is achieved by using the Peer-to-Peer (P2P) connection between
two SIP endpoints for the video calls for the endpoints connected to MiVoice Office 250.
The MiVoice Office 250 Release 6.1 SP1 supports the following features.
• Video calls between SIP clients connected to different nodes.
• Backwardcompatibility.AP2P video call from6.1SP1node to 6.1/6.0/5.1nodeismodified
to an audio call.
• SIP video devices as remote extensions via MBG.
• Video calls across the network like any other desktop device.
SIP PHONE GROUP – PASSWORD ALARM
MiVoice Office 250 Release 6.1 SP1 provides a new System Flag. This field is located in
System\Flags.
When enabled, Alarm 149 will be generated each time a SIP Phone registers with the MiVoice
Office 250, where the password used for the registration is either the same as the SIP Phone
extension number or it is left empty. The alarm is raised against the SIP phone group to which
theSIPPhonebelongs.The SIPPhone will still abletoregisterandoperate,howeverthealarm
will notify the Administrator that security needs to be reviewed immediately for this SIP Phone
Group. This alarm will be cleared automatically by the system as soon as the SIP Phone
registersagainusingnewcredentials.NotethattheAdministratorfirsthastomakethepassword
secure and cannot simply clear this alarm.