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ENT_MLE_015989 - Ed 02_2014-10-13

Chapter 13: Topology – Network Services

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Alcatel-Lucent Enterprise Communication Solutions

April 2014 Offer

Table of contents

1 Topology overview - deployment design ___________________________________________ 4

2 Distributed architecture with centralized call control _________________________________ 5

2.1 Basic architectural configurations ____________________________________________________ 5

2.1.1 Media gateway example ___________________________________________________________________ 6

2.1.2 TDM and media gateway example ___________________________________________________________ 7

2.1.3 TDM and Appliance Server example __________________________________________________________ 8

2.2 Interconnecting IP media gateways __________________________________________________ 8

2.2.1 Configuration ____________________________________________________________________________ 9

2.2.2 Maintenance ____________________________________________________________________________ 9

3 Distributed architecture with networking call control ________________________________ 10

3.1 Corporate ABC networking: infrastructure ____________________________________________ 10

3.1.1 Private network configurations and scalability_________________________________________________ 11

3.1.2 Private ABC networks using TDM leased lines _________________________________________________ 12

3.1.3 ABC virtual private networks (VPNs) on ISDN/PSTN networks ____________________________________ 12

3.1.4 VoIP networking in ABC networks ___________________________________________________________ 14

3.1.5 Private ABC sub-networks using ABC trunk groups on IP _________________________________________ 17

3.2 ABC network features ____________________________________________________________ 18

3.2.1 Private numbering (dialing) plan in an ABC network ____________________________________________ 19

3.2.2 Network-wide telephone features __________________________________________________________ 19

3.2.3 User group features ______________________________________________________________________ 20

3.2.4 Mobility features ________________________________________________________________________ 20

3.2.5 Centralized or distributed attendants ________________________________________________________ 20

3.2.6 Centralized, distributed, or shared voice messaging systems _____________________________________ 21

3.2.7 Distributed contact center ________________________________________________________________ 22

3.2.8 Adaptive routing ________________________________________________________________________ 22

3.2.9 Alternate route selection (ARS) _____________________________________________________________ 23

3.2.10 Management of an ABC network _________________________________________________________ 24

3.2.11 Business continuity in case of Communication Server switch-over ______________________________ 26

3.3 Heterogeneous networking ________________________________________________________ 27

3.3.1 ISVPN (country dependent) ________________________________________________________________ 27

3.3.2 DPNSS networking _______________________________________________________________________ 28

3.3.3 QSIG __________________________________________________________________________________ 28

3.3.4 SIP interoperability ______________________________________________________________________ 30

3.3.5 OmniMobility voice over wireless LAN _______________________________________________________ 30

3.3.6 OmniMobility DECT ______________________________________________________________________ 52

Note: this chapter concerns the OmniPCX Enterprise only. For the OpenTouch Business Edition,

OpenTouch Message Services, or OpenTouch Message Services integration in OmniPCX Enterprise

networks see the corresponding OpenTouch documents.

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