Mitel Series X Mitel Dynamic Extension – Technical White Paper

April 2009

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:30 AM Page i

MITEL SERIES X TECHNICAL WHITE PAPER

ii

The information conveyed in this document is confidential and proprietary to Mitel and is intended solely for MitelEmployees and Mitel Dealers who specifically have a need to know this information. If you are not a Mitel employee or aMitel Dealer, you are not the intended recipient of this information. Please delete or return any related material. Mitel willenforce its right to protect its confidential and proprietary information and failure to comply with the foregoing may result inlegal action against you or your company.

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:30 AM Page ii

DYNAMIC EXTENSION

1MITEL SERIES X

1. OverviewThis document will serve as an overview of keyfeatures in the Mitel® Series X software launch. Ourmain topic of focus for this document will center onMitel Dynamic Extension.

You will learn how Dynamic Extension will greatly enhance your mobility either in the office as a corridor warrior or as a traveling road warrior by transforming any direct dial number into your extension.

You will learn how Dynamic Extension’s flexibilitylends itself to more nimble business continuitysolutions by allowing users to log in anywhere andmake and receive calls as if they are in their office.

2. What is Dynamic ExtensionDynamic Extension provides by-directional callrouting so you can always receive your calls nomatter your location as well as originate callsthrough the system allowing you to present a singleidentity and leverage Mitel IP-PBX in-call features(e.g. conferencing) from any external device.

Dynamic Extension works over any PSTN trunk suchas SIP, PRI or even analog C.O. lines. For trunks thatdo not provide supervisory signaling, DynamicExtension uses ‘answer confirmation’ to make sure the call is handled appropriately.

The Mitel components that enable DynamicExtension include Mitel Personal Ring Groups (PRG)and hot desking. Personal Ring Groups allow you toassign up to eight devices1 to participate in yourpersonal ring group which can be defined as agrouping of devices that can be enabled as aDynamic Extension. These numbers can be anyinternal extension number on the system or anynumber in your network of Mitel systems or ANYdirect dial number. This number could be your mobilenumber, your home number or any DID. For externalnumbers you would leverage the new feature calledexternal hot desking. The combination of personalring group and external hot desking result in thenew Dynamic Extension.

Additionally, a Mitel 3300 Communications Platform (ICP) system, or the same software, MitelCall Director, running on an industry standard Sun,IBM or HP server, could be added into an existingnon-Mitel PBX environment and serve as a gatewayto enable Dynamic Extension for those users.Effectively, through the combined use of a 3300 ICPconnected to an existing non-Mitel PBX with theinclusion of Dynamic Extension, the enterprise cannow turn on Mitel IP features without the need forinstallation of Q.Sig or DPNSS.

There are two new features included in the Series X release. The feature names are GroupPresence and Handoff.

Group Presence – Allows members of call groups such as hunt groups,ACD groups, Ring groups and Personal Ring groupsto make themselves absent or present in a group.Only members who are present in a group areoffered calls to that group.

The Handoff feature for Personal Ring Groups (PRGs) – Allows calls to be “pushed” or “pulled” betweengroup member devices; a push passes the call to thegroup, where it can be answered by any otherpresent group device. A pull takes an in-progress callaway from another member. To push a call to, or topull a call from, another member, you configure aHandoff key in the Multiline Set Key Assignmentform (see Programming, below). You can programany button, including Programmable Key Module(PKM) buttons, as a Handoff key.

The same key is used to push a call and to pull a call.If the Handoff key is pressed while on a call, the callis pushed. If the PRG member device is idle orlistening to dial tone, and there is an in-progress callon another member in the PRG, the call is pulled bypressing the Handoff Feature Access Key (FAK).

The voice path to a non-member device remainsconnected to the member device that initiated thehandoff until that device releases the call or anotherPRG member answers. If the pushing device staysconnected until the new device answers, the caller

1 Devices may include IP or non-IP phones, Mitel proprietary or non-proprietary, fixed or mobile phones, hard phones or softphones – effectively any device(hard phones must provide DTMF functionality)

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:30 AM Page 1

MITEL SERIES X TECHNICAL WHITE PAPER

2

hears a short break in audio when the call is pushedto the new device. If the pushing device releases thecall before the new device answers it, the callerhears ringback until another member device answers the call.

When a call is pulled, it connects to the pullingmember’s set and disconnects from the pulled-frommember’s set. The caller hears a short break in audiowhen the call is connected to the new device.

The caller does not hear “music on hold”. The call is not disconnected from the originating party until it is successfully connected to the party that pulled the call.

3. Ways to use Dynamic Extension Dynamic Extension can be used to:• Direct incoming calls to multiple devices inside or

outside of your system• Originate calls through your system to present a

single identity, extend Mitel IP-PBX features toyour mobile device or any external line

• Add Dynamic Extension to any legacy system

Please refer to the following examples:

Mitel Internal ext

Mitel Teleworker

Any Phone (Mobile, Home, DID)

Personal Ring Group

PSTN

WAN

LAN / WAN

PRI

Any Legacy DeviceAlien orLegacy PBX

PSTN PRI

These devices are not “linked” except perhaps call forwarding

Example 2 – Add Dynamic Extension to a Legacy System

Example 1 – Personal Ring Group

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:30 AM Page 2

DYNAMIC EXTENSION

3MITEL SERIES X

Any Legacy DeviceAlien orLegacy PBX

PSTN PRI

These devices are now twinned in personal

ring group. Calls can be seamlessly managed from either device

Typical Deployment

Mitel Internal extor Teleworker

Any Legacy Device

Any Phone (Mobile, Home, DID)

Personal Ring Group

Alien orLegacy PBX

PSTN

LAN / WAN

PRI

PRI

Step 2 And beyond – add Mitel phones, teleworkers and other value added applications

Step 1 – Add 3300 ICP into the network to enable Dynamic Extension

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:31 AM Page 3

MITEL SERIES X TECHNICAL WHITE PAPER

4

Teleworker Any MobileDevice Anywhere

Any DirectLineAnywhere

Mitel CIS

Mitel 3300 MXeSurvivable Media

Gateway

PSTN

PSTN

PSTN

Primary Data Center Backup Data Center

NuPoint VM / UM

Mitel 3300 MXeSecondaryController

User Community

Branch Office

Mitel 3300 MXeSecondaryController

EnterpriseManager

Mitel CIS

NuPoint VM / UM

MPLS

WWW

Broadband Mobile Network

Voice and Data VLAN

4. Business Continuity and Disaster RecoveryA key benefit for companies that deploy Mitelsolutions is the Mitel Communications Directorflexible deployment architecture. Most companieshave well defined disaster recovery and businesscontinuity plans. A typical Disaster Recovery plan will include a plan to have a subset of employeesreport to a collocation and occupy a desk with PSTN redirect to that location to keep the work flow moving.

Consider the following redundant data centerarchitecture and the high availability it wouldprovide to your enterprise; PSTN access, Mitel voice services, application data and storage could be load-shared between locations to protect againstcatastrophic outages at either location. Services canfailover between locations. This is generally referredto as geo-redundancy.

There are other scenarios that need to be consideredthat disrupt business work flow that have nothing todo with technology outage or a natural disaster thatprevent employees from getting into the office;situations such as terror attacks, police / hostage

situations, disease breakout, power outage orinclement weather. The Mitel solution would include Teleworker capabilities for phones deployed over broadband internet at home, Unified Communications / soft clients to make andreceive calls or log in as a contact center agent.

Dynamic Extension would give you to the ability tomake and receive calls no matter where you happento be as long as you have access to a mobile phoneor POTS line by simply logging from that line and onthe fly converting that number into your DynamicExtension. This can be done from a web based GUIor right from the device through a TUI should younot have internet access. Once logged in, any calls toyour office number route to where ‘you’ are and anycalls you make present your corporate identity andyou have access to all of your system features suchas internal dialing to your colleagues, ad-hocconference calling and transfer capabilities. This canall be done on any mobile device or any number inthe world with no client software required on themobile device.

Example Reference Architecture

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:31 AM Page 4

DYNAMIC EXTENSION

5MITEL SERIES X

5. Engineering InformationHere are some important engineering guidelines foryou to remember. For more detailed informationplease refer to the engineering guidelines for theMitel 3300 ICP:

For detailed information on engineering and programming, please refer to on-line documentation.

6. SummaryMitel’s new Series X provides seamless / convergedmobility allowing you to work anywhere withoutboundaries, without limitation on mobile device,without the need for client software and without theneed for additional server hardware. A simple way toimprove efficiency, reduce mobility costs and protectyour business. Please contact Mitel or your MitelauthorizedPARTNER for more information.

Maximum number of PRGs that can beprogrammed at the same time on a single ICP

To view the maximum number of PRGs and thenumber of used PRGs for your 3300 ICP network,see the System Capacity Display form

Maximum number of PRG members including theprime member in a group

Maximum number of PRGs in which a device (prime line) can be programmed

Maximum number of simultaneously ringing PRG members

Maximum number of PRGs ringing simultaneously(typically with two members per group)

Maximum number of PRGs a non-prime member can belong to

50 percent of the maximum number of prime lineson the system

For example, on a 700-user system, up to 350groups can be programmed, and on a 5600-usersystem, up to 2800 groups can be programmed

8

1

Non-MXe Servers: 292MXe Servers: 812These maximum values may be unattainable due to system limitations

Non-MXe Servers: 86MXe Servers: 240

8

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:31 AM Page 5

www.mitel.comTHIS DOCUMENT IS PROVIDED TO YOU FOR INFORMATIONAL PURPOSES ONLY. The information furnished in this document, believed by Mitel to be accurate as of the dateof its publication, is subject to change without notice. Mitel assumes no responsibility for any errors or omissions in this document and shall have no obligation to you as aresult of having made this document available to you or based upon the information it contains.

M MITEL (design) is a registered trademark of Mitel Networks Corporation. All other products and services are the registered trademarks of their respective holders.

© Copyright 2009, Mitel Networks Corporation. All Rights Reserved. GD 834_3769

For more information on our worldwide office locations, visit our website at www.mitel.com/offices

Global Headquarters

Tel: +1(613) 592-2122Fax: +1(613) 592-4784

Asia Pacific

Tel: +852 2508 9780Fax: +852 2508 9232

U.S.

Tel: +1(480) 961-9000Fax: +1(480) 961-1370

EMEA

Tel: +44(0)1291-430000Fax: +44(0)1291-430400

CALA

Tel: +1(613) 592-2122Fax: +1(613) 592-7825

894_3769-SeriesX_White_Paper:Layout 1 4/15/09 11:30 AM Page b