Nortel 1000 Con?guration guide User manual

Nortel Communication Server 1000
Nortel Converged Office
Fundamentals — Microsoft
Office Communications Server
2007
NN43001-121
.

Document status: Standard
Document version: 01.03
Document date: 30 April 2008
Copyright © 2005–2008, Nortel Networks
All Rights Reserved.
LEGAL NOTICE
While the information in this document is believed to be accurate and reliable, except as otherwise expressly agreed
to in writing. NORTEL PROVIDES THIS DOCUMENT "AS IS" WITHOUT WARRANTY OR CONDITION OF ANY
KIND, EITHER EXPRESS OR IMPLIED. The information and/or products described in this document are subject
to change without notice.
Nortel, the Nortel logo, the Globemark, Meridian 1, and Succession are trademarks of Nortel Networks.
All other trademarks are the property of their respective owners.
Sourced in Canada

3
Contents
New in this release 9
Office Communications Server 2007 features 9
Other changes 9
Revision History 10
How to get help 11
Getting help from the Nortel web site 11
Getting help over the telephone from a Nortel Solutions Center 11
Getting help from a specialist by using an Express Routing Code 11
Getting help through a Nortel distributor or reseller 12
Introduction 13
Converged Office component overview 15
Converged Office 15
Enterprise Voice 17
OCS 2007 Voice components 18
Media Gateways 19
Mediation Server 20
Remote Call Control with SIP CTI (TR/87) 22
Telephony Gateway and Services 23
Personal Call Assistant 25
Access Edge Server 27
OCS 2007 snap-in 27
Multimedia Convergence Manager 28
CDR data collection 28
SIP CTI (TR/87) Protocol 29
Hardware Load Balancer 31
Office Communicator 2007 32
Documentation References 32
Planning and engineering 35
Planning process 35
Network configuration 36
Multiple customer network 40
Multiple location network 42
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

4Contents
Load Balancer planning 43
Load Balancer requirements 44
Redundancy with Load Balancers 45
Nortel Application Switch 46
Capacity planning 46
OC 2007 client requirements 47
Load Balancer capacity requirements 47
SIP CTI (TR/87) services requirements 47
Mediation server requirements 49
Signaling Server requirements 49
Call Server requirements 50
OCS Proxy and MCM capacity requirements 50
General requirements 51
Server topology 52
Operating System Requirements 52
Hardware Requirements 53
Virtual Server 2005 54
Storage 55
Trunks 55
Basic Client Configuration 58
Port use 58
Security 59
Dial Plan considerations 61
Number formats supported by Office Communicator 63
E.164 international format numbers for SIP Gateway and SIP CTI 66
Telephony Gateway and Services planning 66
Systems, platforms, and applications 66
Remote Call Control with SIP CTI 73
LCS 2005 and OCS 2007 coexistence 82
Client considerations 82
Converged Office functionality 82
MCM 2.0 to MCM 3.0 84
Load balancer considerations 84
Migration planning from LCS 2005 to OCS 2007 84
Determine your deployment options 86
Migration process 86
Description of Migration Phases 88
Unified Messaging 90
OCS 2007 users using CallPilot 90
OCS 2007 users using UM 2007—integrated 92
OCS 2007 users using UM 2007—non-integrated 95
Signaling with integrated Voice Mail 97
Signaling with non-integrated Voice Mail 98
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

Contents 5
Installation 101
OCS 2007 installation preparation and deployment 103
CS 1000 and Signaling Server installation 105
OCS 2007 component installation 105
OCS Proxy server installation 107
Load Balancer installation 108
MCM installation 109
Configuration 111
Active Directory configuration 112
Office Communications Server configuration 119
Load Balancer configuration 120
Voice Properties configuration 120
OCS configuration procedures 122
Configuration of Static Routes 122
Host Authorization and Routing configuration 122
Mediation Server configuration 133
MCM 3.0 configuration 134
MCM architecture 135
MCM Direct configuration 137
MCM management console 137
Telephony Gateway and Services configuration 150
Call Server configuration 151
Configuring the Codec 151
Loss Plan configuration 152
Dialing Plan configuration to route to MCM 153
Configuring the Personal Call Assistant 154
Caller ID table configuration 157
Home LOC and Home NPA configuration 159
DNS Server configuration 159
SIP Trunk configuration 160
Domain naming 163
URI Mapping 165
SIP Gateway CLID Parameters configuration 167
SPS configuration 168
NRS configuration 169
CDR configuration 170
E.164 International Format Numbers from Office Communicator - Computer
Calls (SIP Gateway) 170
Phone number normalization 171
Remote Call Control configuration 171
Remote Call Control and PBX integration 171
RCC and PBX integration on OC client 172
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

6Contents
CS 1000 configuration 173
Signaling Server configuration 177
SIP CTI Services configuration settings 181
SIP CTI CLID configuration parameters 185
Configuring the SIP URI Map 189
Configuring CDR 190
Dialing E.164 International Format Numbers from Office Communicator - Phone
Calls (SIP CTI) 190
Normalizing phone numbers 192
SIP Routing and Redundancy configuration 198
OCS 2007 users using UM 2007 in integrated mode 198
Option 1 adding user Alias as Exchange UM 198
Option 2 adding CS 1000 DN as Exchange UM 203
Maintenance 209
Introduction 209
Communication Server 1000 209
MCM 3.0 209
Remote Call Control 210
Operational Measurements for SIP CTI 212
Troubleshooting 215
Checking Telephony Gateway (SIP Gateway) configuration 215
Checking Remote Call Control (SIP CTI) configuration 216
Lack of memory on Signaling Server 216
SIP CTI services does not come up 217
SIP Dialog not established 217
Solution 1: Check configuration parameters in AD 218
Solution 2: Confirm FQDN and the IP address are correct 218
SIP CTI service is down 218
MCM not synchronizing new users in AD Cache mode 220
Solution 1: Check the Global Catalog content manually 220
Solution 2: Access permissions for the AD object properties 221
Solution 3: Enable propagation of the AD to the Global Catalog 222
OC client not registered 223
Pop-up not displayed 223
Two pop-ups are displayed 224
Delay for a SIP Gateway call 224
Call Forward is cancelled by Office Communicator 224
Office Communicator disconnecting from the network 225
Capturing traces and logs 225
Communication Server 1000 traces 225
AML traces on the Call Server (SIP CTI only) 226
SIP CTI traces on the Signaling Server 226
SIP Gateway traces on the Signaling Server 227
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

Contents 7
MCM logs 228
Activating MCM logging 229
OCS logs 231
Case checklists 234
Appendix A Call Flow and protocol details 237
Contents 237
Overview 237
Message sequence 238
Call flow 239
Telephony Gateway and Services call flow 239
Supported features 246
Appendix B Configuration Examples 249
Contents 249
Introduction 249
Standard Edition 249
Setting up the lab 250
Collecting required data 251
Configuring the Call Server 252
Signaling Server checklist 262
Active Directory user configuration 269
Checking the MCM installation and configuration 272
Enterprise Edition 275
Overview of general lab set-up 275
OCS Management Console 278
Security/Certificates 282
Host Authorization 283
Routing 284
Configuring DNS 286
Active Directory configuration 288
Installing and configuring MCM 289
Signaling Server checklist 292
Configuring NRS 293
Normalizing Phone Numbers 295
Appendix C Abbreviations 297
Procedures
Procedure Migrating users from LCS to OCS 89
Procedure Installing the OCS Proxy server 108
Procedure Installing the Load Balancer 108
Procedure Installing MCM 3.0 109
Procedure Defining users 114
Procedure Configuring the Host Authorization and Routing for the OCS
Front End server 123
Procedure Configuring host authorization for the OCS Proxy 126
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

8Contents
Procedure Configuring a Mediation Server 133
Procedure Enabling replication to the Global Catalog 146
Procedure Configuring the SIP Trunk Domain name 164
Procedure Enabling Remote Call Control and PBX integration 171
Procedure Adding a new normalization rule 195
Procedure Configuring a basic mailbox for the UM user 199
Procedure Adding user Alias as Exchange UM 199
Procedure Configuring a basic mailbox for the UM user 203
Procedure Adding Exchange UM 204
Procedure Checking Telephony Gateway configuration 215
Procedure Checking Remote Call Control configuration 216
Procedure Reconfigure SIP CTI service 219
Procedure Checking the Global Catalog content manually 221
Procedure Accessing permissions for the AD object properties 222
Procedure Enabling propagation of the Active Directory field to the Global
Catalog 223
Procedure Resetting MCM debug trace 231
Procedure Activating OCS logs 232
Procedure Enabling OC logs 232
Procedure Setting up the lab 250
Procedure Checking the Call Server configuration 252
Procedure Checking the configuration of the Signaling Server 262
Procedure Checking NRS configuration 266
Procedure Checking the settings of Active Directory user
configuration 269
Procedure Checking the MCM installation and configuration 273
Procedure Identifying the active default applications 280
Procedure Checking the configuration of Certificates 282
Procedure Checking the configuration of Host Authorization 283
Procedure Checking that Routing is correctly configured 284
Procedure Checking that DNS is correctly configured 286
Procedure Checking that MCM is correctly installed and configured. 290
Procedure Checking that the Signaling Server is correctly configured 293
Procedure Checking that NRS is correctly configured 293
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

9
New in this release
Office Communications Server 2007 features
Signaling traffic between Communication Server 1000 and Office
Communications Server 2007 is supported by Multimedia Convergence
Manager (MCM) 3.0 . Media traffic is supported through the Mediation
Server.
The following list shows new Office Communicator 2007 client features for
Voice over IP (VoIP) mode:
•Conference Call
•Announced (Consulted) Call Transfer
•Call Forward
•Call Redirect (Deflect)
•Dual Forking
•DoNotDisturb (DND)
•Federated calls
Other changes
•The Mediation Server is introduced in OCS 2007 as a new component.
For more information about the Mediation Server, see"Mediation Server"
(page 20). Due to the introduction of the Mediation Server, the following
changes occur:
— Transport Layer Security (TLS) and Secure Real-Time Transport
Protocol (SRTP) are not supported.
— OCS 2007 can talk to the Communication Server 1000 over a
Transport Control Protocol (TCP) or Transport Layer Security (TLS)
link. TLS transport is supported between MCM/OCS Proxy and CS
1000/SPS.
— Video support for Session Initiation Protocol (SIP) gateway calls is
not supported. Direct VOIP to VOIP and RCC to RCC calls can use
video. For more information, see "Feature Interactions" (page 68).
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

10 New in this release
— SIP UPDATE method is not supported by Mediation Server. This
method enables SIP Gateways and Endpoints to update the call
information during a call. Because the OCS 2007 Mediation Server
does not support UPDATE, re-INVITE’s need to be sent to the
Mediation Server for every change in the call information during
a call. This has not changed since LCS 2005. There were no
interoperability issues.
— G.711 codec for the short leg (Mediation Server to Communication
Server 1000) and RT audio for the long leg of a call (Mediation
Server to OCS) is supported.
•The Nortel Multimedia Convergence Manager (MCM) 3.0 is introduced in
Converged Office. For more information, see "Multimedia Convergence
Manager (MCM)" (page 28).
•OCS 2007 snap-in for MMC. For more information, see "OCS 2007
snap-in" (page 27).
•The 8540 OCS desk phone can register as an OC 2007 client, however,
Microsoft does not support using a CS 1000 twin phone with them.
Revision History
April 2008 Standard 01.03. This document is up-issued to correct the
syntax in the Installing the OCS Proxy section.
January 2008
Standard 01.02. This document is up-issued for new content to address
CRs, Unified Messaging, and LCS to OCS migration.
December 2007
Standard 01.01. This is a new document for Converged Office with Microsoft
Office Communications Server 2007.
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

11
How to get help
This chapter explains how to get help for Nortel products and services.
Getting help from the Nortel web site
The best way to get technical support for Nortel products is from the Nortel
Technical Support web site:
www.nortel.com/support
This site provides quick access to software, documentation, bulletins, and
tools to address issues with Nortel products. From this site, you can:
•download software, documentation, and product bulletins
•search the Technical Support Web site and the Nortel Knowledge Base
for answers to technical issues
•sign up for automatic notification of new software and documentation
for Nortel equipment
•open and manage technical support cases
Getting help over the telephone from a Nortel Solutions Center
If you do not find the information you require on the Nortel Technical Support
web site, and you have a Nortel support contract, you can also get help over
the telephone from a Nortel Solutions Center.
In North America, call 1-800-4NORTEL (1-800-466-7835).
Outside North America, go to the following web site to obtain the telephone
number for your region:
www.nortel.com/callus
Getting help from a specialist by using an Express Routing Code
To access some Nortel Technical Solutions Centers, you can use an Express
Routing Code (ERC) to quickly route your call to a specialist in your Nortel
product or service. To locate the ERC for your product or service, go to:
www.nortel.com/erc
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

12 How to get help
Getting help through a Nortel distributor or reseller
If you purchased a service contract for your Nortel product from a distributor
or authorized reseller, contact the technical support staff for that distributor
or reseller.
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

13
Introduction
This document describes the elements and processes necessary to
integrate Nortel Communication Server 1000 (CS 1000) with the Office
Communications Server 2007 (OCS 2007) in the Nortel Converged Office.
Prerequisites
•Ensure CS 1000 Release 5.0 and the Product Enhancement Package
is installed.
•Microsoft supports the coexistence of LCS 2005 SP1 Standard Edition or
Enterprise Edition with OCS 2007 Standard Edition or Enterprise pools.
For more information, see "LCS 2005 and OCS 2007 coexistence"
(page 82).
Introduction navigation
•"Converged Office component overview" (page 15)
•"Planning and Engineering" (page 35)
•"Installation " (page 111)
•"Configuration" (page 119)
•"Maintenance" (page 209)
•"Troubleshooting" (page 215)
•Appendix "Call Flow and protocol details" (page 237)
•Appendix "Configuration Examples" (page 249)
•Appendix "Abbreviations" (page 297)
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

14 Introduction
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

15
Converged Office component overview
This chapter provides a brief technical description of all the components
associated with Nortel Converged Office.
Component overview navigation
•"Converged Office " (page 15)
•"Enterprise Voice " (page 17)
•"OCS 2007 Voice components" (page 18)
•"Media Gateways" (page 19)
•"Mediation Server" (page 20)
•"Remote Call Control with SIP CTI (TR/87)" (page 22)
•"Telephony Gateway and Services" (page 23)
•"Personal Call Assistant (PCA)" (page 25)
•"Access Edge Server" (page 27)
•"OCS 2007 snap-in" (page 27)
•"Multimedia Convergence Manager (MCM)" (page 28)
•"CDR data collection" (page 28)
•"SIP CTI (TR/87) Protocol" (page 29)
•"Hardware Load Balancer" (page 31)
•"Office Communicator 2007" (page 32)
•"Documentation References" (page 32)
Converged Office
Many Nortel CS 1000 customers base their multimedia strategy on
deploying Office Communications Server (OCS) 2007 and the Office
Communicator (OC) 2007 soft clients.
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

16 Converged Office component overview
The Nortel Converged Office feature combines the business-grade
telephony of the CS 1000 with the OCS 2007 Enterprise Voice solution
to offer a powerful converged office solution set that improves worker
productivity. Telepresence and Multimodal (business set Voice over Internet
Protocol (VoIP), Instant Messaging (IM), and e-mail) communications
bundles, with applications such as Click-to-call and Access mobility, allow
workers to stay connected when not at their desks.
Nortel Converged Office comprises the following components:
•Remote Call Control (RCC) with Session Initiation Protocol Computer
Telephony Integration (SIP CTI) (TR/87) provides full Microsoft Office
telephony integration to control business-grade telephony phones
from within Microsoft Office applications, as well as support for a
standards-based CTI interface defined by the TR/87 protocol.
•Telephony Gateway and Services provides a basic SIP Telephony
Gateway to connect between Private and Public Telephony networks
and OC 2007 clients.
Nortel offers unique value with the two components that provide its
telephony services to OC 2007 clients and connectivity between the
Office Communications Server 2007 and the Nortel telephony network.
Nortel Converged Office provides the following benefits:
•federated IM with industry name instant messaging
•Microsoft application integration
•click-to-call commands and missed call log
•easy-to-use single soft client for IM, telepresence, and VoIP telephony
presence integration with Microsoft desktop and applications
•a powerful suite of Nortel applications which include:
— Nortel Unified Messaging
— Contact Center
— Interactive Voice Response (IVR)
— conferencing
— click-to-call
Leveraging the CS 1000 and Microsoft desktop software allows end
users to access business-grade telephony services on the Nortel CS
1000 from the Microsoft Office Communicator desktop client. End users
can:
•originate and receive telephone calls over existing CS 1000 phones from
an Office Communicator (OC) 2007 desktop client.
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

Enterprise Voice 17
•originate and receive Public Switched Telephone Network (PSTN) calls
from the Office Communicator (OC) 2007 soft client when away from
the office.
•take advantage of existing business telephony features on the CS 1000.
Enterprise Voice
This section describes the Office Communications Server (OCS) 2007
Enterprise Voice solution. The Nortel Converged Office feature integrates
the OCS 2007 with the CS 1000. For a description of the integrated network
from the CS 1000 perspective, see "Network configuration" (page 36).
Enterprise Voice is Microsoft’s software-powered VoIP solution, a SIP-based
implementation of IP telephony for the enterprise that does not rely on
proprietary hardware investments. Enterprise Voice is a full-featured VoIP
solution that includes connectivity to the PSTN gateways and interoperation
with the CS 1000. Enterprise Voice, IM, group IM, enhanced presence,
and audio-video conferencing together constitute the Microsoft Unified
Communications solution.
The following figure shows the OCS 2007 Enterprise Voice components
extracted from the overall OCS 2007 architecture. COMO refers to
Communicator Mobile.
Figure 1
Enterprise Voice components - OCS 2007
When a user calls from an Enterprise Voice client by dialing or clicking on a
contact name or number in OC 2007 or Outlook:
•the OCS Front End server normalizes the number to the E.164 format,
and invokes routing rules based on the location profile and user policy,
and directs the call to the appropriate Mediation Server
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

18 Converged Office component overview
•the Mediation Server performs all necessary media transcoding and
routes the call to the IP-PSTN gateway.
•the IP-PSTN gateway, based on topology, applies local or PBX dialing
rules and passes the call to the PSTN or PBX
Enterprise Voice uses Real-Time Transport Protocol (RTP) for media. Like
SIP, RTP is an Internet Engineering Task Force (IETF) standard. It defines a
packet format to carry audio and video over IP networks.
Enterprise Voice uses SIP for signaling and RTP for media. In the OCS,
SIP is used for IM, conferencing, presence subscriptions, video, and voice
enabling Enterprise Voice clients to provide a common user experience
across the communication modes.
Enterprise Voice is the Microsoft SIP–based implementation of IP telephony
for the Enterprise.
SIP sessions can include the sharing of real-time media. However, SIP
itself does not handle the actual media data, such as audio, video, and
application sharing. This separation means that SIP and various media
protocols can evolve independently.
OCS 2007 Voice components
The core routing components for Enterprise Voice reside on the following:
•Standard Edition Server (in the role of Front End Server or Director)
•Enterprise Edition Front End Server
Other core routing server components include
•Translation Service—translates a dialed number into E.164 format
based on the normalization rules defined by the administrator.
•Inbound Router—handles incoming calls according to user-specified
preferences.
•Outbound Router—routes calls to CS 1000 or PSTN destinations after it
applies authorization rules to callers and determines the optimal media
gateway to route each call.
OCS 2007 Front End or Director components essential for voice support,
but are not voice components include
•User Services—performs Reverse Number Look-up on the target phone
number for incoming phone calls.
•User Replicator—extracts user phone numbers from the Active Directory
for use by User Services and the Address Book Service.
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

Media Gateways 19
•Address Book Service—normalizes enterprise user phone numbers to
E.164 format to provision user Contacts in Office Communicator.
The following figure shows the components essential for voice support.
Figure 2
Core routing server components
Media Gateways
Media gateways are third-party hardware components that provide a
common interface between the Enterprise Voice infrastructure and the
PSTN. Media gateways translate signaling and media between the PSTN
and Enterprise Voice infrastructure.
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.

20 Converged Office component overview
Media gateways translate the following protocols between the
circuit-switched PSTN network and the packet-switched Enterprise Voice
infrastructure:
•Signaling protocol—SS7 and other protocols on the PSTN translate
to SIP for Enterprise Voice
•Transport protocol—T-Carrier or E-Carrier on the PSTN convert to RTP
or Secure Real-Time Transport Protocol (SRTP) for Enterprise Voice
From the Nortel perspective, the CS 1000 functions as a media gateway for
the clients of the OCS 2007 server.
Mediation Server
The Mediation Server provides signaling and media translation between the
Enterprise Voice infrastructure and a CS 1000 gateway.
Figure 3
CS 1000 and OCS 2007 logical network elements
The Mediation Server provides the following functions:
•translates SIP over Transport Control Protocol (TCP) (on the CS 1000
gateway side) to SIP over mutual Transport Layer Security (TLS) on the
Office Communications Server side
•encrypts and decrypts SRTP on the Office Communications Server side
•translates media streams (G.711) on the CS 1000 gateway side and RT
Audio on the Office Communication Server side
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
.