Nortel Networks NN44470-100 User Manual

Nortel Media Application Server 6.0 for AS 5300

Fundamentals

NN44470-100

Document status: Standard Document issue: 01.01 Document date: 03 June 2008 Product release: Release 6.0 Job function: Product Fundamentals Type: NTP Language type: English

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Nortel, the Nortel logo and the Globemark are trademarks of Nortel Networks.

Contents

New in this release 5

Features 5 Other changes 5

Introduction 6

MAS installation 7

Architecture and supported hardware and software 7 Session controller 8 VXML browser 8 SIP Multimedia Conductor (SIPMC) 8 Multimedia Controller 8 IVR media processor (IVRMP) 9 Conference media processor 9 Multimedia Content Store 9 Stream source 9 Reporter 9 MAS installation 9 Options for MAS application deployment 10 Application deployment options 11 Maintenance Releases 12

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Contents

MAS commissioning 13

AS 5300 commissioning for MAS 13 Packaged applications 13 MAS clusters 14 SIP signaling 17 Media conferencing 19 Media settings 21 Continuous streaming 24

MAS administration and security 26

Access security setup 26 Remote Desktop Protocol 28 IPSEC configuration 29 Security tools 29 Certificate management 30 Service and configuration data backup 31 Automatic and manual backups 31 System maintenance 33

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Contents

MAS performance management 34

MAS fault management 35

Fault management architecture 35 SNMP management 36 Supported MIBs 36 Syslog 37 Event logs 37 Security Logs 38 Alarms 39

Nortel MAS Console 42

Counters & Gauges 42 Nortel MAS Console 43 Dialog boxes 45

Terminology 58

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New in this release

The following sections detail what is new in Media Application Server 6.0 for AS 5300 Fundamentals (NN44470-100).

Navigation

• Features (page 5)

• Other changes (page 5)

Features

See the following sections for information about feature changes:

• MAS and AS 5300 integration (page 5)

• Administration and security (page 5)

MAS and AS 5300 integration

The Media Application Server (MAS) 6.0 supports integration with the Application Sever (AS) 5300. For more information, see see the figure MAS

commissioning.

Administration and security

The MAS 6.0 for AS 5300 release contains new features that include SIP TLS, Secure SRTP, and platform security. For more information, see see the figure

MAS administration and security.

Other changes

The MAS 6.0 documentation suite contains reorganized content from the MAS 5.1, 5.0, and 4.0 documentation suites.

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Nortel Confidential

Introduction

The Media Application Server (MAS) is a software platform for hosting multimedia applications. This document explains MAS platform fundamentals.

Navigation

• MAS installation (page 7)

• MAS commissioning (page 13)

• MAS administration and security (page 26)

• MAS performance management (page 34)

• MAS fault management (page 35)

• Nortel MAS Console (page 42)

• Terminology (page 58)

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MAS installation

This chapter explains MAS installation fundamentals. For step-by-step information about how to install the MAS platform, see Nortel Media

Application Server 6.0 for AS 5300 Installation

Navigation

• Architecture and supported hardware and software (page 7)

• MAS installation (page 9)

• Options for MAS application deployment (page 10)

• Maintenance Releases (page 12)

Architecture and supported hardware and software

This section details the system architecture for MAS 6.0 for Application Server (AS) 5300 release as well as the supported hardware and software for that platform. For more information, refer to Media Application Server 6.0 for AS 5300 Planning and Engineering (NN44470-200).

System architecture

The MAS platform is a software-based, media processing server. Software on the host server performs all media processing. The MAS architecture permits scalability for all core functions of the platform, including signaling, application execution, content management, and media processing.

(NN44470-300).

Network architecture

The MAS platform can scale from a small, duplex server solution. The system exploits a multiprocess, multithreaded architecture that is designed to take advantage of multiple processor core and hardware platforms. The server achieves scalability across multiple computers by replicating the entire system.

Supported hardware and software

The MAS platform uses commercial operating systems and commercial hardware platforms for all processing.

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MAS installation

Supported hardware platform

You can install the MAS software on an IBM X3550. The X3550 has an Intel XEON 5140 2.33 GHZ processor, 2 GB of RAM and a SCSI hard drive.

Supported operating system

You can install the MAS software on Windows 2003 operating system (OS). To

comply with the Defense Information Systems Agency (DISA) Security Technical Implementation Guideline (STIG) and GR-815 compliancy,

install additional OS hardening patches

and security software must be installed

you must

on the MAS before you install MAS platform or MAS application software.

MAS platform core components

The MAS platform software includes the following core components:

• Session controller (page 8)

• VXML browser (page 8)

• SIP Multimedia Conductor (SIPMC) (page 8)

• Multimedia Controller (page 8)

• IVR media processor (IVRMP) (page 9)

• Conference media processor (page 9)

• Multimedia Content Store (page 9)

• Stream source (page 9)

• Reporter (page 9)

Session controller

The Session Controller (SC) provides the application execution environment and manages all platform resources. The Media Controller provides the conduit for communication between components and is the core of the platform.

VXML browser

The VXML Browser (VXMLI) provides the execution environment for VXML based applications.

SIP Multimedia Conductor (SIPMC)

The SIP Multimedia Conductor (SIPMC) provides SIP signalling and session management capabilities.

Multimedia Controller

The Multimedia Controller (also called the SoftIVR Controller, or SC) is the core of the MAS platform. The SC provides the conduit for communication between components, provides the environment for application execution,

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and manages all platform resources. The SC is a client with respect to all other components. The SC connects to all components identified as part of one virtual system.

IVR media processor (IVRMP)

The IVR media processor IVRMP provides audio and video streaming, digit collection, automatic speech recognition (ASR) and Text-to-Speech (TTS) capabilities.

Conference media processor

The Conference media processor (ConfMP) provides audio and video conferencing functions to the remainder of the platform.

Multimedia Content Store

The Multimedia Content Store (CStore) manages all content types and ensures that you can access content reliably and consistently within a platform cluster.

Stream source

The Stream source (streamsource) provides continuous pretranscoded realtime audio to the IVRMP to facilitate a radio broadcast effect. Multiple IVRMP channels use this feature to listen to the same real-time audio stream without transcoding the stream on each channel or connecting each channel to a remote server. Primarily, the SSRC is used for music-on-hold streaming or connecting to Internet streaming radio servers.

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MAS installation

Reporter

Reporter (reporter) generates scheduled reports (CSV, HTML) with optional FTP/SMTP delivery. Reporter also replicates OM and call detail records.

MAS installation

The MAS platform and its associated applications are installed together on a commercial off-the shelf (COTS) server. The server is shipped with a hardened version of Microsoft Windows Server 2003 preinstalled. After you power on the server, change the IP address, netmask, gateway, and host name. A Gigabit Ethernet (GbE) (recommended) or 100 MB full-duplex network connectivity is required. Quality of service (QoS) policies on the switch connecting directly to the server must trust the server to allow Differentiated Services Code Point (DSCP) markings to flow through the switch.

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MAS installation

Uninstallation

Under normal circumstances, you need not uninstall the MAS platform unless you want to perform a clean installation. Before you install the platform, you must uninstall all applications and close all instances of the Nortel MAS Console. If instances of the Nortel MAS Console are running when you uninstall the MAS platform, you must restart the server.

Reinstallation

If you need to reinstall the MAS platform, you can use the MAS installation DVD. The MAS installation DVD contains an automated installer. The MAS platform is contained in a single installer; each application is bundled in a separate installer. After you insert the DVD, locate and run the setup program.

MAS installation verification

After you install the MAS platform, you must verify that the IP address and host name are correct.

Supported third-party software

Nortel supports McAfee VirusScan Enterprise Edition 8.5 only.

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Options for MAS application deployment

The following sections provide an overview of the applications. available for use on the MAS 6.0 platform, as well as the application deployment options for the platform.

Meet Me Conferencing

The Meet Me Conferencing application provides reservation-less audio conferencing on the MAS platform. You can use Meet Me Conferencing for private conferencing at any time. Meet Me Conferencing is controlled by the chairperson, who is assigned the role by an Application Administrator (AA). For more information about Meet Me Conferencing, see Nortel Media Application Server 6.0 for AS 5300 Meet Me Conferencing Fundamentals (NN44470-103).

Ad Hoc Conferencing

Use Ad Hoc Conferencing to join together multiple simultaneous calls into a single conference call. You can initiate a conference call from any client. To initiate a conference, place a number of calls on hold and then select the Join button in the Multimedia PC Client to transfer the calls to the conference server and start the conference. The conference originator may leave the conference without interrupting the call. The conference server terminates the call when there is only one participant left. For more information about Ad Hoc Conferencing, see Nortel Media Application Server 6.0 for AS 5300 Ad Hoc Conferencing Fundamentals (NN44470-104).

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Music On Hold

With the Music On Hold application, a system administrator can provision the MAS system to play music while a caller is hold. The Music on hold application lets a caller know that the call is still connected. It is possible to implement the Music on Hold application for the following types of hold: end-user, transfer, and Call park. This application continuously plays for the user on hold and does not restart the tune each time a user is put on hold. For more information about Music on Hold, see Nortel Media Application Server 6.0 for AS 5300 Music on Hold Fundamentals (NN44470-106).

Announcements

The Announcements application plays recordings for branding, causes, and treatments. You can use announcements to indicate the status of calls and internal session manager conditions (treatments); which are used in all-circuit busy situations. Announcements also provides treatment when calls fail to complete, and provides branding (for example, Welcome to Nortel Networks). For more information about Announcements, see Nortel Media Application Server 6.0 for AS 5300 Announcements Fundamentals (NN44470-105).

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Unified Communications

The Unified Communications application provides users with integrated access to their voice-mail messages from a preferred client device, such as a PC, voice over IP (VoIP) phone, wireless phone, or a traditional circuit switched telephone. One single mailbox can be used by multiple telephony devices and the messages deposited in this common mailbox may optionally be mailed to a user’s e-mail client, offering another convenient access option for voice mail message playback. Users manage their account through a traditional Telephony User Interface (TUI) or through the web-based Personal Agent (PA), which may be optionally configured for the user. For more information about Unified Communications, see Nortel Media Application Server 6.0 for AS 5300 Unified Communications Fundamentals (NN44470-

102).

Application deployment options

In Release 6.0, Media Application Servers are deployed as duplex clusters (pairs) to ensure redundancy. In a duplex cluster, the MAS applications are installed on both servers. The only exception to this rule is Meet Me, which can be installed in an N+1 cluster configuration. You can deploy MAS applications in one of three different deployment scenarios:

• Dedicated Deployment

• Co-resident Application Deployment (including Meet Me)

• Co-resident Application Deployment (excluding Meet Me)

The deployment scenario you select is determined by your capacity requirements.

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Dedicated deployment

In a dedicated deployment scenario, each application is deployed on its own MAS pair to the maximum capacity of that single application. However, for the most efficient use of resources, a combination of dedicated deployment and multi application deployment is required.

Co-resident deployment

In a co-resident deployment, up to five MAS applications (Meet-Me, Ad Hoc, Music on Hold, Announcements, and Unified Communications) can be deployed on the same MAS duplex.

If you choose a co-resident deployment, you must stay within the engineered capacity limits for that co-resident deployment. You cannot, for example, expand the capacity for Meet Me and balance that by reducing Unified Communications capacity. If you require additional application capacity, you can add an additional MAS pair and deploy a dedicated service to accommodate the additional capacity requirements for that service. For example, if you currently have a combination five deployment, and you require additional Meet Me capacity, you can purchase additional Meet Me licenses and servers and deploy a dedicated Meet Me server cluster to handle the increased capacity.

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MAS installation

The available co-resident deployment options are defined in the following sections.

Co-resident Application Deployment (including Meet Me)

In a Co-resident Application Deployment (excluding Meet Me), all five MAS applications are deployed on the same MAS pair.

Co-resident Application Deployment (excluding Meet Me)

In a Co-resident Application Deployment (including Meet Me), Ad Hoc, Music on Hold, Announcements, and Unified Communications are deployed on one MAS pair and a separate MAS pair is dedicated to Meet Me Conferencing.

Maintenance Releases

The MAS is updated or downgraded using executable installers (DVDs). To update the MAS to the latest maintenance release, you must obtain the latest maintenance release DVD and install the software. To downgrade to an earlier maintenance release, you must run the installer on desired maintenance release DVD. For the procedures to update and downgrade maintenance releases, see Nortel Media Application Server 6.0 for AS 5300 Installation (NN44470-300).

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MAS commissioning

This chapter describes the items that you can configure on the MAS platform. For detailed information, see Nortel Media Application Server Commissioning (NN44470-301).

Navigation

• AS 5300 commissioning for MAS (page 13)

• MAS clusters (page 14)

• SIP signaling (page 17)

• Media conferencing (page 19)

• Media settings (page 21)

• Continuous streaming (page 24)

AS 5300 commissioning for MAS

For more information about commissioning the Application Server (AS) 5300 system for use with MAS, see Nortel Media Application Server Commissioning (NN44470-301) and the AS 5300 documentation suite.

Packaged applications

You can deploy packaged applications on the MAS platform. Packaged applications are prepackaged applications that you configure on the system using an installer.

Attention: This release does not currently support custom applications.

Packaged application installation and licensing

You can install packaged applications after you install and configure the MAS platform. As part of the installation process, you must configure license keys for all packaged applications that you install.

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To view installed packaged applications, use the Nortel MAS Console. The Nortel MAS Console lists the application version and the current operational state for that application. An example of a packaged application would be Recorder.

Configuration data

Each packaged application has one or more configuration parameters that you can modify to alter the behavior of the application. To view and modify these application-specific parameters, use the Nortel MAS Console.

Operational state

Each packaged application has an operational state that you can view and modify. To view and modify the operational state of an application, use the Nortel MAS Console.

You can select one of the following operational states:

• Unlocked—This is the default. Normal call processing is performed for the application.

• Locked—When the application enters a Locked state, existing sessions for that application are terminated and the system redirects new traffic. You typically place the application into a Locked state when performing maintenance (for example, application upgrades) to the application.

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MAS clusters

• Pending Lock—When the application enters a Pending Locked state, the system redirects new traffic for that application, while existing sessions are preserved.

A MAS cluster is a collection of MAS nodes that work closely together. A MAS cluster shares the following resources:

• SNTP server for clock synchronization

• persistent content storage

• Controller Peer Ring

• redundant license servers

A cluster consists of N+1 active MAS servers where N is a maximum of 7 for high availability and redundancy. An additional server is used as a spare to accommodate one server failure. The spare server is active and handling traffic, but the entire system is engineered to N servers of capacity (not N+1). This ensures that enough remaining capacity is available to handle peak traffic if one server fails.

The following terminology describes the different cluster types:

• Duplex—a cluster consisting of two MAS nodes

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• N-way—a cluster consisting of three or more MAS nodes

Because the cluster is based on system replication, you must configure the same applications on all of the MAS servers in the same cluster and provision any application data (such as subscriber information) for that cluster. The SIP proxy must support load balancing across multiple MAS nodes in the same cluster.

Persistent content storage

Configuration of the persistent content storage depends on

• the number of nodes in a cluster

• the applications that are provisioned for that cluster

• how those applications make use of the persistent content storage

For duplex configuration, the cluster consists of two nodes. On both nodes, configure the Content Store Local Function key to Master, configure the Content Store Peer Master Server key to contain the IP address of the peer master node, and configure the Content Store Remote Server(s) key to a blank value. To view an example of a duplex cluster, see CStore duplex cluster

configuration (page 15).

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CStore duplex cluster configuration

For N-way configuration, the cluster consists of three or more nodes. On the first two nodes, configure the Content Store Local Function key to Master, configure the Content Store Peer Master Server key to contain the IP address of its peer master node, and configure the Content Store Remote Server(s) key to a blank value. Disable the CStore for all other nodes.

For all other nodes, configure Content Store Local Function to Idle and configure the Content Store Remote Server(s) key to contain the IP address of both CStore masters. Configure the Content Store Peer Master Server key to blank. To view an example of an N-way cluster, see CStore N-way cluster

configuration (page 16).

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CStore N-way cluster configuration

Controller Peer Ring

Applications use the Controller Peer Ring to send and receive events to the various MAS nodes in the cluster. Configuration of the Controller Peer Ring depends on the number of nodes in the cluster and if the provisioned applications use the Controller Peer Ring. To create the ring, configure each MAS node with a primary and backup controller peer. You can then dynamically add or remove MAS nodes to and from the Controller Peer Ring.

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For duplex configuration, configure the Controller Peer Primary Server key to the IP address of the other media server and configure the Controller Peer Backup Server key to the IP address of the same server. To view an example of a duplex controller ring, see Duplex controller ring (page 16).

Duplex controller ring

For an N-way configuration, for Node n, configure the Controller Peer Primary Server key to the IP address of Node n+1 and the Controller Peer Backup Server key to the IP address of Node n+2. To view an example of a 4-way controller ring, see 4-Way controller ring (page 17).

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4-Way controller ring

SIP signaling

SIP configuration is broken into the following categories: General, Domains, Accounts, Trusted Nodes, and Routes. The following sections describe these categories in more detail.

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SIP properties

You can modify the following SIP properties.

SIP properties

Property Description

Always use SIP default outbound proxy

Answer Delay (rings) Represents the number of rings before an

Hide SIP User-Agent Header If enabled, the User-Agent header is not included

SIP domains

You must define all SIP domains on the MAS. You must configure a SIP domain before you can configure SIP accounts and routes.

If enabled, the system routes SIP requests, which do not match domain proxy configuration, through the default outbound proxy (if configured), even if the IP address is specified in the host portion of the destination Universal Resource Indicator (URI).

incoming SIP call is answered. To configure the duration of a ring, use the Ring Interval engineering parameter. Zero rings means that the call is immediately answered.

in SIP messaging.

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The platform has an internal domain called the wildcard domain, which is represented with an asterisk and is the default domain if no matching domain is found.

SIP accounts

SIP accounts are used for application registration in the SIP network. The MAS registers all accounts against the registrar servers. For information about the servers, see SIP registrar servers (page 19). You can view, add, and delete SIP accounts.

SIP trusted nodes

MAS processes SIP traffic from trusted nodes only (for example, proxies and gateways). Any requests from a nontrusted node are rejected. You can view, add, and delete trusted nodes.

Attention: If you add or delete a trusted node, you must restart the platform for the change to take effect.

SIP routes

Use SIP routes to define all proxy and registrar servers with which a MAS node communicates. You can configure up to 32 routes for each domain.

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SIP proxy servers

A SIP proxy server accepts MAS requests and queries the SIP registrar server to obtain the recipient addressing information. The proxy server then forwards the request directly to the recipient if the recipient is in the same domain or to another proxy server if the recipient is in a different domain.

The MAS platform uses proxy server routes to route outbound SIP requests to the appropriate proxy server for outbound traffic load sharing and failover. Routes are selected based on the domain (or subdomain) lookup. If no matching domain is configured, the default wildcard (*) route is used. For example, if an outbound call is made to janedoe@techtrial.com, the routes associated with the techtrial.com domain are selected.

On the first routing attempt, the MAS platform selects active routes that are online based on the lowest priority only. The weight is used to select routes within the same priority level. Route selection from the next priority level is chosen automatically only if the lower priority routes are either offline or fail to respond.

For load sharing configurations, you can define multiple routes with the same priority. For failover configurations, configure the primary routes with priority = 0 and weight = 10 and configure the secondary routes with priority = 1 and weight = 10.

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SIP registrar servers

A SIP registrar server is a database that contains the location of all user agents within a domain. MAS registers its applications with all configured SIP registrars. Registration is optional based on MAS configuration. Digest authentication is supported.

Media conferencing

MAS supports multimedia conferencing for both audio and video streams. You can use one of the following conferencing algorithms: basic and premium.

Basic conferencing algorithm

The basic conferencing algorithm mixes the two audio streams with the highest energy and provides the mixed audio to the remaining participants. The two participants with the highest energy audio streams receive only the other active participant's audio so they do not hear themselves. The participant with the highest energy with of the two highest energy speakers is known as the primary active speaker. The other participant is the secondary active speaker. (The system continually monitors the energy of all participants in a conference, and using threshold algorithms, changes the conference focus point.)

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When some or all of the participants in the conference have corresponding video streams, the video streams of the primary active speaker are replicated and sent to those participants. The primary and secondary speakers see only each other if they have video-enabled clients. The system attempts to provide video participants with video when possible. If the active speaker does not have video capabilities, participants receive a configurable replacement video, which by default is an icon of a megaphone.

Premium conferencing algorithm

A more advanced conferencing algorithm (called premium conferencing) mixes up to four parties simultaneously. Each channel runs a voice activity detector (to determine speech versus background noise), an automatic gain control algorithm, and a dynamic jitter buffer with compaction and packet loss concealment. This algorithm is suitable for mixing large conferences.

Number of conferences and participants

MAS has no hard limitations on how many simultaneous conferences can exist on the system, or how many participants can be in each conference. The maximum number of participants in a single conference, without bridging multiple conferences together, is limited only by the capacity of the scaled system, which can vary based on hardware and the operating system.

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