Edge

Services

DMZ

Front End Back End

UC Endpoints

Media GW

UC

Pool

Direct SIP

Mediation Servers

IP-PBX

ExUM

On-premises

Archiving

Monitoring

AD DNS

SIP Trunking

PIC

XMPP

MSN

AOL

Yahoo

Remote

Users

Federated

Businesses

PSTN

IP-PBX

SIP Trunking

Direct SIP

Analog Devices

Mediation

Server

Edge

Services

DMZ

Front End - (incl. Mediation) Back End

UC Endpoints

UC

Pool

ExUM

On-premises

Archiving

Monitoring

AD DNS

PIC

XMPP

MSN

AOL

Yahoo

Remote

Users

Federated

Businesses

PSTN

AV Conf.

Media GW / SBA

Enabled through two enhancements that lower TCO and optimize quality

OCS 2007 R2

Lync Server 2010

Route GW

Route_US LAX_GW

Route_EUR DE_GW1

DE_GW2

Route_APAC SYD_GW

Route GW

Route_US LAX_GW

Route_EUR DE_GW1

DE_GW2

Route_APAC SYD_GW

Enabled through two enhancements that lower TCO and optimize quality

Benefits of direct routing of media

Key Scenarios

Example Topologies

Example Topologies

Main Site

(with Data Center)

IP-PBX

Lync Server

2010

Mediation PSTN

PBX Endpoint

Branch Site

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

WAN

PBX Endpoint

IP-PBX

Gateway

GW / SBA

PSTN Call from Main Site via Gateway

Main Site

(with Data Center)

IP-PBX

Mediation

PBX Endpoint

Branch Site

WAN

PBX Endpoint

IP-PBX

PSTN

Gateway

GW / SBA

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

PSTN Call from Branch via existing IP-PBX

Main Site

(with Data Center)

IP-PBX

Mediation

PBX Endpoint

Branch Site

WAN

PBX Endpoint

IP-PBX

PSTN

Gateway

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

PSTN Call from Branch via Gateway

Main Site

(with Data Center)

IP-PBX

Mediation

PBX Endpoint

Branch Site

WAN

PBX Endpoint

IP-PBX

PSTN

Gateway

GW / SBA

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

PSTN Call from Main Site & Branch Office using Centralized SIP Trunking

Main Site

(with Data Center)

IP-PBX

PBX Endpoint

Branch Site

PBX Endpoint

IP-PBX

PSTN SIP Trunking Mediation

WAN

GW / SBA

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

PSTN Call with CAC Rerouting through Branch PSTN Connection

Main Site

(with Data Center)

IP-PBX

PBX Endpoint

Branch Site

PBX Endpoint

IP-PBX

SIP Trunking PSTN Mediation

WAN

GW / SBA

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

Main site call with Lync Server 2010 endpoint & PBX endpoint via Main PBX

Main Site

(with Data Center)

Mediation

Branch Site

WAN

PBX Endpoint

IP-PBX

PSTN

PBX Endpoint

IP-PBX

Gateway

GW / SBA

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

Branch call between Lync Server 2010 endpoint & PBX endpoint via Branch PBX

Main Site

(with Data Center)

Mediation

Branch Site

WAN

PSTN

PBX Endpoint

IP-PBX

IP-PBX

PBX Endpoint

Gateway

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

Branch call between Lync Server 2010 endpoint & PBX endpoint via Main PBX

Main Site

(with Data Center) Branch Site

PBX Endpoint

IP-PBX

PSTN

WAN

IP-PBX

PBX Endpoint

Mediation

Gateway

Lync Server

2010

Lync Server 2010

Endpoint Lync Server

2010 Endpoint

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Design Requirements and Goals for Lync Server 2010

Location Infrastructure

Partner Components

Connexon Intrado

i2 architecture

RFC 4119

Location Determination

1. Map of network elements and locations created in Location Information Server (LIS)

2. lIS addresses validated with Master Street Address Guide

3. Premises connected client acquires LIS URI, emergency dial strings, and configuration setting, and sends Location Request with IP / MAC / BSSID address to LIS upon registrations or network change

4. lIS returns civic address to client based on network address lookup in database

425-706-1442

0016E3A558CA

172.24.33.132

Chicago

911 Router

MSAG

Lync Server 2010 Pool with LIS

Customer Site

Switch: 10.0.0.1 Port: 6/29

E911 Service Provider

Seattle

Call Routing

425-706-1442

0016E3A558CA

172.24.33.132

Chicago

911 Router

MSAG

Customer Site

Switch: 10.0.0.1 Port: 6/29

E911 Service Provider

Seattle

1. Client initiates 911 call and includes location and E.164 number in SIP Invite

2. CS “14” matches 911 number pattern and routes to SIP trunk connecting to E-911 Service Provider

3. E-911 Router references civic address to route call to correct PSAP

4. Service provider optionally conferences in on-premises security to call

5. PSAP able to call back using E.164 number

Lync Server 2010 Pool with LIS

Physical connectivity of Analog devices (FXS) provided by GW partners

All routing and policy enforcement for Analog devices centralized in Lync Server 2010 – eliminates the need to manage GWs as “mini-PBX”

FXS

FXS

Fax

Analog

Device

ATA

Lync Server

2010

PSTN

• Lync Server 2010 Call Detail Record (CDR) infrastructure used to track usage

• Optimized routing allows Fax call routing through Lync Server 2010 without terminating Media

Gateway

Physical connectivity of Analog devices (FXS) provided by GW partners

All routing and policy enforcement for Analog devices centralized in Lync Server 2010 – eliminates the need to manage GWs as “mini-PBX”

Fax

Lync Server

2010

PSTN

• Lync Server 2010 Call Detail Record (CDR) infrastructure used to track usage

• Optimized routing allows Fax call routing through Lync Server 2010 without terminating Media

Signaling

Media ATA

Analog

Device

Gateway

microsoft.com/communicationsserver

Technical Library

NextHop

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