Planning for Hybrid Voice

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Many enterprises are actively looking to move their enterprise services to the cloud. The move to the cloud does not happen in single deployment step. It is more of a process performed over time in a phased approach eventually leading to a complete transition to the cloud. We refer to this phased approach while some users are still homed on-premise and other users are moved to Lync Online as a hybrid environment.

While planning a transition to the cloud, there needs to be an approach which allows the following:

  • Moves existing functionality to the cloud

  • Provides time to validate quality, reliability and the security of the cloud offering

  • Continues to allow existing on-premise Lync investments to be utilized

To facilitate the transition to the cloud, hybrid voice allows customers to integrate Lync Online with their on-premise PSTN infrastructure:

  • For migrating users from Lync on-premise to Lync Online

  • For leveraging existing on-premise PBX infrastructure

  • For keeping existing carrier relationships

On-Premise Infrastructure Requirements

Server Roles Supported versions Notes

Lync pool

Lync Server 2010: October 2012 cumulative updates or later

Lync Server 2013

The Lync pool must be configured as the next hop to the Edge Server. A Lync pool consists of an Enterprise Edition pool, Standard Edition server or Director

Edge Server

Lync Server 2010: October 2012 cumulative updates or later

Lync Server 2013

  

Mediation Server

Office Communication Server 2007 R2

Lync Server 2010

Lync Server 2013

E-9-1-1 and Media Bypass for hybrid voice users is only supported with Lync Server 2013 Mediation Server.

Feature Summary

Enterprise Voice Functionality Lync Online Hybrid Voice

Call Hold/Retrieve

yes

Call Transfer

yes

Call Forwarding

yes

Voicemail (Exchange UM Online)

yes

USB Peripherals

yes

Delegation, Team Call

yes

Outside voice – Mobile

yes

Integration with on-premise PBX

yes

Private Line

yes

E-9-1-1

yes

Media bypass

yes

Lync Phone Edition devices

yes

Response Group

no

Call Park

no

Voice Resiliency

no

RCC (remote call control)

no

Analog and common area phones

no

Integration with on-premise Call Center Solutions

no

Deployment Workflow

The following diagram illustrates the workflow to enable users for hybrid voice.

Hybrid Voice deployment workflow

Hybrid Voice workflow diagram