®
Microsoft
Lync Ignite
Microsoft Lync 2013
Hybrid
Hybrid Voice enables Public Switched
Telephone Network (PSTN)/PBX
connectivity for cloud users through
the PSTN infrastructure that is part of
the on-premises deployment
Kathy
Lync OnPremises
Dave
Lync Online
Lync Online Infrastructure
Lync FE Pool
PSTN GW
Edge Server
PSTN
Internet
John Lync Online
6
Edge Server may be
Lync Server 2010 or
Lync Server 2013
“Next hop” must be
Lync Server 2010 CU5 or later
PSTN egress through various
gateways as appropriate
Lync Online users signed in
from tenant network or the Internet
Kathy
Lync On-Premises
PSTN GW
WAN
Dave
Lync Online
Lync FE Pool
WAN
Lync Online
Infrastructure
Edge Server
Internet
WAN
John
Lync Online
Branch #1
Branch #2
Branch #N
Lync On-Premises
DNS SRV
Lync Online client discovers the
server through the Domain Name
Service (DNS) Service Location (SRV)
resource record
On-premises server redirects the Lync
Online client to the cloud
Media
Signaling
Dave
Lync Online
PSTN Infra
Lync Online
Infrastructure
2
Edge Server
Lync FE
Internet
3
1
PSTN
0
Lync On-Premises
John
Lync Online
Peer to Peer: Two Lync
Online Users
Session Initiation Protocol (SIP)
signaling flows through Lync Online
Media flows using the optimal path
between the client endpoints
Media
Signaling
3
4
Dave
Lync Online
Internet
2
1
Lync Online
Infrastructure
PSTN
PSTN
GW
Edge Server
Lync FE
Peer to Peer: On-Premises
to Lync Online Users
SIP signaling is routed between the
on-premises deployment and Lync
Online
Media flows using the optimal path
between the client endpoints
Media
Signaling
Kathy
Lync OnPremises
Lync OnPremises
Internet
Dave
Lync Online
5
1
4
Lync Online
Infrastructure
3
2
Lync FE
Edge Server
Call Bypassed
Incoming PSTN Call
Lync On-Premises
An incoming PSTN call is routed to the onpremises gateway, then moves to the onpremises Lync Server
The number is located via Reverse Number
Lookup (RNL), routed to Lync Online, and then
routed to the Lync Online endpoint
Media flows using the optimal path between the
client endpoint and PSTN infrastructure/MS
5a is the media path when bypassed
5b is the media path when not bypassed
Media
Signaling
Bypassed Media
5a
PSTN
1
2
Dave
Lync Online
5
Internet
5b
PSTN 5b
GW
3
Edge Server
Lync FE
4
Lync Online
4 Infrastructure
Incoming PSTN Call (Internet
User)
An incoming PSTN call is routed to the onpremises gateway, then moves to the onpremises Lync Server
The number is located via RNL, routed to Lync
Online, and then routed to the Lync Online
endpoint (on the Internet)
Media flows using the optimal path between the
client endpoint and the MS
Most likely through the on-premises Edge
Server; if not, between the online and onpremises Edge Server
Media
Signaling
Lync On-Premises
Internet
PSTN
2
1
PSTN
GW
2
5
3
5
On-Premises
Lync Server
Edge Server
5
John
Lync Online
4
3
Lync Online
Infrastructure
Outgoing PSTN Call
Lync On-Premises
Call Bypassed
An outgoing PSTN call request is placed by a
user hosted on Lync Online
An RNL is performed and fails to associate a
user
The request is assumed to be a PSTN/PBX call
and is proxied to the on-premises Lync Server
Voice policy enforcement and call authorization
are performed on-premises
The call is routed to PSTN egress and media
bypass setup to client
Media flows using the optimal path between the
client endpoint and PSTN infrastructure/MS
Media
Signaling
Bypassed Media
4a
Dave
Lync Online
1
4b
4b
PSTN
PSTN
GW
Voice policy
enforcement and
call authorization
done on-premises
Internet
Lync Online
Infrastructure
2
3
2
On-Premises
Lync Server
Edge Server
Outgoing PSTN Call (Internet
User)
An outgoing PSTN call request is placed by a
user hosted on Lync Online
An RNL is performed and fails to associate a
user
The request is assumed to be a PSTN/PBX call
and is proxied to on-premises Lync Server
Voice policy enforcement and call authorization
are performed on-premises
The call is routed to PSTN egress
Media flows using the optimal path between the
client endpoint and MS
Most likely through the on-premises Edge
Server; if not, between the online and onpremises Edge Server
Media
Signaling
Lync On-Premises
Internet
2
4
PSTN
PSTN
GW
3
5
5
On-Premises
Lync Server
Edge
Server
5
1
John
Lync Online
2
Lync Online
Infrastructure
Location policy and LIS
URL fetched during sign-in
Enhanced 911
Call routed to on-premises
Lync Server
Lync On-Premises
The client retrieves the location policy and
determines its location from the Location
Information Service (LIS) Server during sign-in
When an emergency call is placed, Lync Online
routes the request across to the on-premises
Lync Server
The on-premises Lync Server routes the
emergency call to the appropriate E911 service
provider
Media
Signaling
1
Dave
Lync Online
LIS
E911 Service
Provider
4
5
5
PSTN
GW
3
Lync Server
Edge
Server
Internet
2
Lync Online
Infrastructure
Address in PIDF sent
through. No LIS validation
Enhanced 911 (Internet User)
The client cannot retrieve location information
during sign-in because it is outside the tenant
network
The user manually sets the location information
When an emergency call is placed, Lync Online
routes the request across to the on-premises
Lync Server
The on-premises Lync Server routes the
emergency call to the appropriate E.911 service
provider
Lync OnPremises
E911 Service
Provider
LIS
2
4
Internet
3
5
5
PSTN
GW
Lync Server
5
1
User sets location
manually
Media
Signaling
Call routed to on-premises
Lync Server
Dave
Lync Online
Edge
Server
Lync Online
Infrastructure
Call hold/retrieve
ü
ü
ü
ü
Call transfer
ü
ü
ü
ü
Call forwarding
ü
ü
ü
ü
Voice mail
ü
ü
ü
ü
USB peripherals
ü
ü
ü
ü
Outside Voice—mobile
ü
ü
ü
ü
Delegation, team call
ü
ü
ü
ü
Integration with on-premises PBX
ü
ü
ü
Û
Remote Call Control (RCC)
ü
ü
Û
û
Private line
N/A
ü
ü
û
Voice resiliency
N/A
ü
û
û
E911
N/A
ü
ü
û
Unified Communications (UC) devices
ü
ü
ü
Ü
RGS/Call Park Service (CPS)
ü
ü
û
Û
Analog devices, common area phone
ü
ü
ü
Û
Integration with on-premises call center solutions
ü
ü
û
Û
Media Bypass
û
ü
ü
N/A
Select group of
Lync Online users
to be enabled for
Enterprise Voice
In Lync Server
Control Panel
(LSCP) (onpremises) enable
the user for
Enterprise Voice
and assign a DID
Online: Assign
predefined voice
policy with hybrid
mode (remote
Microsoft Windows
PowerShell)
Move UM for
Hybrid Voice
users to
Exchange Online
On-premises:
Assign suitable
dial plan and
voice policy
(for call routing)
Active Directory
(AD)
synchronization
Assign a voice
license (using
Lync Online
Control Panel)
Set-CSTenantHybridConfiguration
-HybridConfigServiceInternalURL <on-premise Web Service internal URL>
-HybridConfigServiceExternalURL <on-premise Web Service external URL>
-PeerDestination <on-premise Edge Server FQDN>
New-CSVoiceRoutingPolicy -Identity "tag:HybridVoiceUser" -Name "Hybrid
Voice Policy for users" -PstnUsages @{add="International SIP Trunk"}
NOTE:
Managed via remote PowerShell to Lync Online
Grant-CsVoicePolicy –id sip:amy.strande@contoso.com –PolicyName
HybridVoice
Grant-CsVoiceRoutingPolicy –id sip:amy.strande@contoso.com –PolicyName
HybridVoiceUser