Mahendra Sekaran Principal Group Program Manager Microsoft Corporation EXL410 Agenda Review Lync 2010 Topology Network Planning Considerations Lync 2010 Interop features IPPBX Interop Media Bypass ID: 261320
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Slide1Slide2
Planning Voice Deployments
Mahendra SekaranPrincipal Group Program ManagerMicrosoft Corporation
EXL410Slide3
Agenda
Review Lync 2010 TopologyNetwork Planning ConsiderationsLync 2010 Interop features
IP-PBX InteropMedia BypassMigration ApproachesVideo InteropSlide4
Takeaways
How to deployment enterprise voice in Greenfield environment How to enable Interop with existing
PBXSlide5
Agenda
Review Lync 2010 TopologyNetwork Planning ConsiderationsLync 2010 Interop features
IP-PBX InteropMedia BypassMigration ApproachesVideo InteropSlide6
UM
SCOM
Standard Edition
Enterprise Edition
Topologies
Director
Archiving
Monitoring
Mediation
Group Chat
Optional Servers
Front end
Back end
AV Conf
Edge
Servers
Topologies SimplifiedSlide7
Deployment Model
Global Deployment is a collection of Sites
Sites are made of PoolsPools host users & services (such as IM/P, conferencing, VoIP, etc.Slide8
Reference Topologies
Small
Standard Edition central site
Branch through Edge
Small with Branches
250-5,000
Standard Edition central site
Single branch, with SBA
Small with Failover
Two Standard Editions -
“Paired” Standard Edition to support inexpensive failover
Any
Small
< 5000 users
This example
5,000 users, 3 servers
1667 users/serverSlide9
Reference Topologies
Single DC
Enterprise Edition, Single Data Center
Branch through Edge
DC with Branches
1,000 – 30,000
Enterprise Edition, Single Data Center
Two branches, one SBA, one PSTN Interconnect
Single Datacenter
< 100,000 users
This example
20,000 users, HA, 14 servers
1429 users/serverSlide10
Reference Topologies
Global
10,000 +
Two Data Centers with EE
One
Central Site with an SE
Some SBA
Some
PSTN
Very Large
Unlimited
Enterprise
Edition, > Two Data Centers
Standard
Editions
Survivable Branch
Appliances
Branch with
Standard Edition
Global,
Multi-Site
Unlimited
This example
Site 1: 18 servers
Site 2: 11 servers
Site3: 1 server
2413 users/server
Site B
Site CSlide11
Agenda
Review Lync 2010 TopologyNetwork Planning Considerations
Lync 2010 Interop featuresIP-PBX InteropMedia BypassMigration ApproachesVideo InteropSlide12
Media
Modality
Codec
Typical BW
Max w/o
FEC
Max w/FEC
Audio
Peer to Peer
RTA-W
39.8
62
91
Audio
Peer to Peer
RTA-N
29.3
44.8
56.6
Audio
PSTN
RTA-N
30.9
44.8
56.6
AudioPSTN
G.71164.897
161AudioConferencing
G.722
46.1100.6
164.6
AudioConferencing
Siren25.5
52.668.6Video
Peer to Peer
RTV - CIF
220260
Video
Peer to Peer
RTV - VGA508
610
Video
Peer to Peer
RTV - HD1210
1510
VideoPeer to Peer
RTV - Pano
269
360
Video
ConferencingRTV - CIF
220260
Video
Conferencing
RTV - VGA508
610
Video
Conferencing
RTV - Pano
269360
Bandwidth - Planning
One-way traffic including media, typical activity, RTCP.
For planning in a well managed, right-sized network, use Max BW w/o FEC.
If the network will be constrained and you want to preserve quality, use Max BW with FEC.When understanding how much bandwidth at any given time is being used, use the Typical BW numbers. Not for planning, as usage will be greater at times.Slide13
Network Planning Considerations
Lync media endpoints adapts to varying network conditionsPlan, Assess, Configure, MonitorUse the bandwidth calculator tools to estimate Lync traffic
Assess your network infrastructure Configure QoS to prioritize A/V traffic; e2e latency < 150ms Continually monitor your network for configuration driftsFor constrained links – configure CAC, disable videoIf IPSec is deployed, recommend disabling IPSec over the port ranges used for A/V trafficSlide14
Agenda
Review Lync 2010 TopologyNetwork Planning Considerations
Lync 2010 Interop featuresIP-PBX InteropMedia BypassMigration ApproachesVideo InteropSlide15
Voice
Routing – Trunk Translations
Centrally manage number formatting prior to routing to PBX/PSTNAlice calls London using Redmond
+44221234567
01144221234567
Alice calls London using
London GW
+44221234567
0221234567 Slide16
Caller ID Presentation Controls
Natively control Caller ID presented to PSTN/PBX:
Granular controls based on callers and destination number:
Alice to external PSTN number
,
+1 425 707 9050
+1 425 882 8080
Alice to internal PBX number
,
+1 425 707 9050
+1 425 707 9050
Controlled by PSTN usage
Overrides “simultaneous ringing”
:
Bob calls Alice; Bob has masking for external calls & also has simultaneous ringing
Bob’s caller-id is presented to Alice’s mobile deviceSlide17
Exchange Unified Messaging (UM)
The Only supported voice mail solution
Support for Exchange UM 2007 SP1 and newerCo-locate UM and Mailbox serversMAPI traffic is less tolerant of latency than VoIP in this scenarioUM and Lync in separate forests is supported
Just ensure the EUM settings in the user objects are synched to
Lync
forest
Exchange Online and
OnPrem
together?
Yes
Turn on EUM enablement setting on the user object
User Move
Lync
Powershell
Edge Server is required to be deployedSlide18
Agenda
Review Lync 2010 TopologyNetwork Planning Considerations
Lync 2010 Interop featuresIP-PBX InteropMedia BypassMigration ApproachesVideo InteropSlide19
Lync
Telephony Deployment
“We’re sold – our goal is Enterprise Wide UC as soon as practical”“We love Lync
, but I can’t replace everything yet….”
“
Lync
is our presence platform, but all telephony will remain on the PBX”
Replace the PBX
Connect with the PBX
Retain the PBXSlide20
Lync
Telephony Deployment
SIP Trunking
Replace the PBX
Direct SIP to IP-PBX
Gateway to TDM PBX
Gateway to PSTN
C
onnect with the PBX
Retain the PBX
More
Costly with Suboptimal UEX
Using
Lync
Voice where practical for the business
Lync
Everywhere
What
How
I
mplications
Separate Servers & Vendors for UCSlide21
Replace the PBX
PBX becomes obviated
Intra-company calls route through PSTN
Sensible for right combination of internal politics,
Δ
over time.
DIDs & Numbering
Move the numbers: Lots of carrier hassle
Get new numbers: Expensive at scale
SIP Trunking
Fastest way to future proof solution
Regional availability
may be an issue
Gateway
Are scale & quantity of Mediation is a concern with SIP Trunking.
Consider deploying behind
PBX’s Gateway
SIP Trunking
Gateway to PSTNSlide22
Connect with the PBX
Who moves?
Locations: Main site first, may make numbering easier.
Job functions: Those that can best prove out the ROI
Depreciation: Old equipment / stations go first, new ones later.
PBX stays resident
GW CapEx on may be disadvantageous if traffic peaks then falls
Does it make sense to reconfigure or replace the shop floor? Emergency campus phones? Garage phones?
Direct SIP
Available for most older IP-PBX
releases
Blocking interop to aid in compete against
Lync
.
Direct SIP to IP-PBX
Gateway to TDM PBX Slide23
IP-PBX Interoperability
Pain
points
in
OCS 2007 R2
Interoperability via Direct SIP (OIP qualification)
Very broad range of PSTN gateways, Direct SIP to IP-PBX
R2 Direct SIP requires routing media through Mediation Server
Not a significant problem for central sites
But difficult in branches:
Requires Mediation
S
ervers in branches and/or
Media
tromboning
(hairpin through the WAN to Mediation Server in central site)Slide24
OIP
qualified
IP-PBX
PBX end-points
OCS pool
OCS end-points
Mediation
Server
Media
Signaling
IP-PBX
Interoperability
in
OCS 2007 R2
Direct SIP to IP-PBXSlide25
Removes need for media transit
Signaling
continues to transit through MediationB2BUA: security
demarc
,
interop
…
Media goes
direct
3 Advantages + media resiliency
Based on location of Media endpoints
Bypass only occurs if client is “local” to next hop
G.711 direct – optimized for LAN-like conditions; SRTP supported
When client is not “local”, media goes through Mediation
Codec optimized for WAN using per session CAC;
Mediation provides audio healing
Enables “lightweight” Mediation (collocation with FE, SBA)
Lync 2010: Media BypassSlide26
OIP-
Qualified
IP-PBX
capable of bypass
PBX end-points
Lync pool
with
Mediation
Server
Lync
end-points
Media
Signaling
IP-PBX Interoperability in
Lync
Direct SIP to IP-PBX with media bypassSlide27
“Always Bypass” in “Global Settings”
T
reats as a single site ( requires good connectivity )No Call Admission Control
Will always bypass to trunks enabled for bypass
Network Configuration Setting
Leverages
Region/Sites definition
Each site/Region is assigned Bypass ID
Uses current client location
Client IP address
Bypass ID
Gateway address (for media) Bypass ID
Comparison
of the IDs, bypass if the two IDs match
Lync 2010: Media Bypass
How it works – two approachesSlide28
Lync 2010: Media Bypass
How it works – two approachesSlide29
Inbound calls
Mediation receives SIP invite; IP address of media gateway in SDP
Mediation
passes gateway Bypass ID to clients
Client makes bypass decision
Outbound calls
Client
passes Bypass
ID
in SIP Invite
Mediation
determines gateway Bypass ID
Mediation Server
compares, call
is bypassed if matches
Lync 2010: Media Bypass
Inbound and Outbound logicSlide30
Survivable Branch Appliances
qualified, all support bypass
5 partners – Audiocodes
, Dialogic, Ferrari, HP, NET
Gateways (not all support bypass – see
OIP page
)
Cisco ISR series 28xx, 29xx, 38xx, and 39xx
Avaya 23xx and 41xx
Gateways from Media5,
Nuera
, and
Quintum
IP-PBX
(not all support bypass – see
OIP page)Cisco 4.x, Cisco 6.1, Cisco
7.1 and Cisco 8.x Avaya CM/Aura 4.x, Avaya CM/Aura 5.xAvaya CS1k 5.x, Avaya CS1k 6.x Alcatel Lucent 9.x, Siemens
3.1RxMitel, Genband, Aastra, and Huawei
Testing and Qualification for
Lync
Interop
Open Interoperability Program – tested or in process of testingSlide31
Centralized IP-PBX with multiple sites
Local media gateways in
branch sites (ex: Cisco ISR with MTP)Want to bypass media to local gateway when
Lync
is in the branch site
Media bypass in multiple sites?? How to --
Define regions and sites in network Configuration
Define (virtual) media gateways in topology builder
Associate media IP in site to each “media gateway”
Define listening ports as appropriate
Establish appropriate routing on both systems
IP-PBX unaware of
Lync
dynamic location;
suggest routing to local trunk
Media Bypass – Multiple Sites, Centralized Signaling
What’s differentSlide32
Media Bypass – Multiple Sites, Centralized Signaling
What’s differentSlide33
Media Bypass with
CUCM
In-branch call between Lync
endpoint
and Cisco phone
via
branch MTP
CUCM (MTP)
Lync
Mediation
PSTN
PBX
Endpoint
Lync
Endpoint
Lync
Endpoint
Gateway
WAN
Cisco
phone
ISR (MTP)
G.711
HQ Site
Orlando BranchSlide34
Media Bypass with
CUCM
In-branch call between Lync
endpoint
and Cisco phone
via
branch MTP
CUCM (MTP)
Lync
Mediation
PSTN
PBX
Endpoint
Lync
Endpoint
Lync
Endpoint
Gateway
WAN
Cisco
phone
ISR (MTP)
G.711
Call stays up
HQ Site
Orlando BranchSlide35
No Media Bypass for Calls on WAN
WAN
call between
Lync
in branch and Cisco phone via central MTP
CUCM (MTP)
Lync
PSTN
PBX
Endpoint
Lync
client
Lync
client
Gateway
Cisco
phone
ISR (MTP)
WAN
G.711
Mediation
RT Audio
Narrowband
HQ Site
Orlando BranchSlide36
Media Bypass with IP-PBX
Branch call with local resiliency
CUCM (MTP)
Lync
Mediation
PSTN
PBX
Endpoint
Lync
Endpoint
Lync
Endpoint
Gateway
WAN
PBX
Endpoint
ISR (MTP)
G.711
Lync SBA
HQ Site
Orlando BranchSlide37
A migration and coexistence plan with CUCM and ISR
Planning Cheat Sheet
Define Topology with CUCM and ISRUse ISR as gateway by CUCM and LyncUse it for PSTN calls by both “PBX”Configure ISR for Media BypassDirect SIP between CUCM and LyncConfigure it for extension calls
by both “PBX”
Including media bypass to CUCM
Migrate
users
stepwise
CUCM (MTP)
ISR (MTP)
LyncSlide38
A migration and coexistence plan with CUCM and ISRSlide39
Takeaway
Integrating natively with IP-PBXs can
Allow low cost Proof of ConceptConnect migrated & non-migrated usersAllow for long term coexistenceNative integration with media bypass enablesCPE-less deploymentKeeping much more of the media local, including in centralized multisite topologiesSlide40
Agenda
Review Lync 2010 TopologyNetwork Planning Considerations
Lync 2010 Interop featuresIP-PBX InteropMedia BypassMigration ApproachesVideo InteropSlide41
High quality video in every desktop
Improve the
meeting room
experience
Lync
Video
Strategy
High quality video in every desktop
High resolution at low cost
Single client experience
Integration with applications
Embrace and
lead interoperability
Connect and integrate all legacy rooms (via gateways)
Foster innovation in endpoints natively interoperable with
Lync
Develop on market standards and contribute to success of UCIF
Improve
the meeting room experience
Simplify and enrich user experience
Expand
reach and
usage
Improve productivity
Embrace
and Lead
InteroperabilitySlide42
Partner Approaches
VTC Direct Registration
Register directly
Multiparty
calls on
Lync
AVMCU
VTC
endpoints appear as
contacts
Users can take advantage of existing
Lync
functionality
Click to call, drag and drop, right-click…
Committed partners
:
Polycom
,
Lifesize
Gateway/MCU
Gateway
pass-through
Multiparty
calls
hosted on partner MCUVirtual rooms appear as contacts
Legacy VCS/telepresence interoperability, multiple views, transcodingCommitted partners:Polycom
, Lifesize,
RadvisionSlide43
Recap and Takeaways
Lync 2010 supports a variety of topologies, pick the most appropriate topology for your business needsAlthough Lync 2010 endpoints adapt to varying network conditions, it is important to plan, assess, and continually monitor your network
infrastructrureLeverage the new Lync 2010 routing features to simplify your interop configurationLync 2010 offers a lot of flexibility in IP-PBX interop topologies - leverage media bypass to reduce TCO
Lync 2010 offers interoperates with all leading video systems natively or through a video
interop
gatewaySlide44
t
hank you …Slide45
Resources
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TechNet
Resources for IT Professionals
http://microsoft.com/technet
Resources for Developers
http://microsoft.com/msdn Slide46
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