Specifications

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.